10 Ways Simultaneous Equations Can Be Used in Everyday Life


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Math in Daily Life – PDF

This will help us understand the importance of maths in daily life. It summarizes some real-life examples with activities. The importance of maths in our daily life and few real-life examples are mentioned below in the Downloadable PDF.



Write it out. Writing is greater than thinking

Your brain sucks at remembering stuff. So write it

Your brain sucks at remembering stuff. So write it out.

Not sure why you’re sad in the morning. Write it out.

If you just lay in bed wondering why you feel like crap, your brain will go in this endless circle.

Instead if you write it out.

Is my brain chemically altered?  Not enough sleep? Hungover.

By writing this out, and seeing the text in front of me, I can instantly see: “OHH…I went out with my friends last night and drank, and this morning I’m slightly hungover. Hangovers make you feel like crap. The primary reason I feel like crap is because I’m hungover. I know that for the next few hours I 100% will feel like crap, and that’s normal. if I drink a lot of water, eat some food, and try to workout, in a few hours I’ll feel better. But for now, I will continue to feel like crap and being hungover is the reason.

At least now you’ve identified the problem and know what to expect, and how to start solving it.

Those are all the Life Formulas I’ve got for you!

Cost and Demand

Simultaneous equations can be used when considering the relationship between the price of a commodity and the quantities of the commodity people want to buy at a certain price. An equation can be written that describes the relationship between quantity, price and other variables, such as income. These relationship equations can be solved simultaneously to determine the best way to price the commodity and sell it.

Planes, Trains and Automobiles

The same formula used to calculate running times can be used to determine speed, distances and time duration when traveling by car, plane or train and you want to know the values for the unknown variables in your travel situations.

How can I solve this hilariously?

Sometimes I’ll have a task that’s kind of boring.

Sometimes I’ll have a task that’s kind of boring.

Well I would rather have something that’s funny and fun than boring anyday.

So how can solve this hilariously?

Simply asking this questions puts a mischievous grin on my face, and for some reason my brain starts lighting up with solutions!

Sometimes they are absurd of course, but often times it leads to a legitimately great solution.

There’s some dumb things like…..I have this gif of a guy typing on a keyword. While drawing this, his hands KIND OF looked like a dick.

I erased it immediately and tried to re-drawn typing hands, but was so tickled by the idea of the dick hands that I went ahead and re-drew the hands where they DEFINITELY looked like dicks.

For some reason this gave my 12-year-old mind grea

For some reason this gave my 12-year-old mind great satisfaction.

I don’t know why, but it made the work fun.

I like to optimize my life for maximum comedy, so for me asking How can I “solve this hilariously is great.”

For a cheap bastard like Noah: How can I solve this cheapest.

For an efficiency geek: How can I solve this the most efficiently.

Whatever metric brings YOU joy, no matter how unreasonable, is great.

Cook up Something Great!

Algebra is your friend in the kitchen, too. Chefs use it all the time to adjust recipes, calculate servings, and determine prices.

Adjusting Recipes: x/y

It’s time for breakfast. You’re making oatmeal. The instructions tell you to use 1 cup of water and .5 cup of oats to make 1 cup of cooked oatmeal, but you need enough oatmeal for yourself and your two younger brothers. How do you adjust the recipe? You can triple the recipe easily by using the algebraic equation for ratios, x/y.

Simply take the cooking ratio for oatmeal and multiply each side by 3 (since there are three people).




You’ll need 3 cups of water and 1.5 cups of oatmeal to make enough breakfast for you and your brothers.

Filling a Pool with Water

You just bought a new pool (or had one built) and are wondering how long it’s going to take to fill it up. Obviously, you want it filled with water sooner rather than later however you don’t want it to overflow while you are sleeping or at work. How can you ensure that the pool will reach the optimum level at a time when you are available to turn the water off? Using some math we can predict when the pool will be finished filling. We could also use math to set the fill rate such that it finishes filling at a specified time. Here are some example problems:

Your brand new below ground pool holds 11,000 gallons and you want to know how long it will take to fill up. To figure this out, you need to measure the flow rate of your nearby hose.

First, grab a 5 gallon bucket, a 1 gallon jug, and a stopwatch (or your phone). Use the 1 gallon jug to fill the bucket in 1 gallon increments, marking the inside at each 1 gallon interval. Once you’ve marked out 5 gallons, next grab a stopwatch and time how long it takes to fill the bucket to the 5 gallon mark. Do this 2 or 3 times and then compute the average of the measures.

For this sake of this article, let’s assume that it takes an average of 55 seconds to fill a 5 gallon bucket with water. Now you can compute the flowrate:

(5gallons/55seconds) X (60seconds/minute) = 5.45gallons per minute or 5.45gpm

Since the pool volume is 11,000 gallons, we can compute the fill time:

11,000gallons/5.45gpm = 2018.35 minutes

Convert to hours:

2018.35/60 = 33.6 hours

Now that you know how long the pool will take to fill, you can start filling it when it is convenient so that it doesn’t overflow. Alternatively, since you know the pool's volume you can specify a fill time and then calculate the flowrate need to achieve this.

Some Real-Life Examples with Activities

 When we get up in the morning, we see the time of waking to verify whether we have enough time to complete various tasks. (Awareness of time, reading a clock/watch, planning one’s routine)

Task: Encourage the kids to make a daily timetable for their daily activities allocating time for their hobbies, academics, leisure, sports, etc.

How much is this shirt or blouse going to cost once the 50% sale is applied? What about once the taxes are added? Do you prefer to gather your things and hope for a great deal on the cash counter? Or know the price before heading there.

That takes math knowledge and at least a basic understanding of how percentages work.

Task: Fix pocket money for your kids and guide the

Task: Fix pocket money for your kids and guide them to manage it in a proper way.

We set our routine according to our workout schedu

We set our routine according to our workout schedule, count the number of repetitions while exercising, etc., just based on math.

Task: let the kids practice any type of exercise like skipping, push-ups, running, and ask them to keep a count of their repetitions.

Basic knowledge of math also helps keep track of s

Basic knowledge of math also helps keep track of scores for every sports activity. Geometry and trigonometry can help your teens who want to improve their skills in sports. It can help them find the best way to hit a ball, make a basket or run around the track.

Task: Introduce the kids to a new sport on TV and let them judge the winning team.

The recipe calls for “3 tablespoons” of salt. You only have a teaspoon or a soup spoon. The recipe calls for “2 cups,” but you only have a quarter cup measuring tool and a half cup measuring tool. How much adds up to “2 ”? You may know the answer.

But that’s because you understand math, fractions, and conversions.

Task: Bake a cake :)

Task: Bake a cake 🙂

Operating a car or motorcycle is ultimately nothin

Operating a car or motorcycle is ultimately nothing but a series of calculations viz., How many kilometers needed to reach the destination? How much petrol in the car? How many kilometers per hour am I able to drive? How many kilometers per liter does my car get? Oh no, I’ve hit a traffic jam, and now my pace has slowed, am I still going to make it to work on time?

All of these questions are extremely easily answered with basic math skills.

Task: Calculate the speed of the school bus by using the distance and time of travel.

How many rolls of wallpaper do we need for this wa

How many rolls of wallpaper do we need for this wall? What’s the difference between a meter and a square meter? Do we have enough space to fit in your favorite couch? Common questions when you are trying to set up your new space or apartment. It's very important to know these basics before you head to a store, otherwise, you will end up coming back empty-handed as the sales representative won’t be able to help you without the proper input from your side.

You should have a fair knowledge of dimensions and units and unit conversions to be able to sail through. It seems fairly simple if you know how to do the math.

Task: Help the kids to measure their study table.

Just home decorating, math is also an essential concept of fashion designing. From taking measurements, estimating the quantity and quality of clothes, choosing the color theme, estimating the cost and profit, to produce cloth according to the needs and tastes of the customers, math is followed at every stage.

Task: Join the cut pieces of waste cloth and make a small table cover.

Technically ‘critical thinking’ is not even Math as there are no numbers involved. But knowledge of Math surely increases the ability to think critically.

The more math skills you gain, the more you observe the minute details, question the available data, rule out unnecessary data and analyze it further for your benefit.

Task: Solve a puzzle

Task: Solve a puzzle

Though math is itself a unique subject. But, you would be surprised to know that it forms the base for every subject. The subjects like physics, chemistry, economics, history, accountancy, statistics, in fact; every subject is based upon math.

So, next time you say, “I’m not going to study this math subject ever!” remember, this subject will not be going to leave you ever.

Task: Takedown the important dates in the History in chronological order.

Is that It?

The uses of math for the layperson are essentially endless. I could probably write several more hubs on how math is used in everyday life. Personally I use math on a daily basis to measure, track, and forecast many things. Whether it's computing the gasoline efficiency of my vehicles (or the efficiency of an electric vehicle for that matter), determining how much food to make for dinner, or calculating the power requirements of a new car stereo system, math is like a second and universal language that helps me make sense of the world.

Maths in the Real World of Work

Beyond universal applications that touch everyone’s lives, mathematics is very much a part of our professional lives. Much more so if you are an accountant than a literary critic, granted, but applications abound in many spheres of work. Here are some examples.

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Mathematics and Sales

Having at least a basic understanding of maths while working in sales is an indispensable asset.

Maths practice is important for the workplace (Sou
Maths practice is important for the workplace (Source: Pixabay.com – ArtsyBee)

Whether calculating prices in Excel, working out sales percentages, commissions, a discount or converting currencies, maths is a central part of the daily life of all who are involved in sales. However, you won’t have your maths teacher alongside you, so be sure to practice properly!

Maths and Accounting

You don’t need a maths degree to become an accountant or a secretary, or even to plan your monthly household budget, however, you need at least some knowledge of maths to successfully navigate your day’s work.

To manipulate an Excel table, do basic statistical analyses, evaluate a forecast budget, balance your books or determine management thresholds to assess the health of an organisation: Maths is everywhere!

Geometry and Architecture

Maths, with its formulas for area and volume, is widely used in architecture to represent buildings in three dimensions and to create perspective views of a plan.

Thales’ theorem also allows us to calculate hard-to-measure distances, such as the height of a pyramid.

Architecture draws heavily on geometry (Source: Pi
Architecture draws heavily on geometry (Source: Pixabay – 3093594)

Maths can even be found in video and animated film design, through 3D special effects and image morphing software.

In fact, it’s impossible to manipulate 3D images in space, create representations of surfaces or curves, or distort images without a minimum knowledge of maths.

Maths and Economics

Most economic models use mathematics. Broadly, economists are interested in production, productivity and the distribution of wealth in a given country.

The range of applications of mathematics is as broad as the economy itself, from simple calculations like the aggregation of a company’s payroll, to more technical notions such as share price updates and concepts found in macro- and microeconomics.

However, one of the most interesting aspects of maths in economics, though far from the easiest, is their use in predictive economic models.

Maths allows us to store data that will allow us to anticipate, to some extent, the future fluctuations of a phenomenon we are attempting to explain.

There are other subjects closely related to both economics and the application of mathematics which fulfil other roles. One such sub-discipline is econometrics, which seeks to demonstrate mathematically whether variables are relevant in explaining phenomena.

It could be used, for example, to attempt to determine whether and how the number of years of education that a person has acquired is related to his or her salary.

Maths: The Lingua Franca of Science

Just as English is the international language of areas like business and geopolitics, mathematics enjoys the same prestige in the realm of science.

From economics, as we have just seen, to physics, biology, health or neuroscience, the application of maths in the sciences is omnipresent. If you are keen to embark on a career in any of these areas, and many more, you should be aware that your maths abilities will be closely scrutinised by recruiters: Just one more proof that maths is present in many professions.

Maths and its Effects On Health

Mathematics is an application of matter and contributes to all of our methodical and systematic behaviours, which in turn help us to survive.

It is Maths, for instance, that has brought order to the communities across this planet and helped prevent chaos and catastrophes. We have learned to live together as humans and evolve as a species using the materials we have at our disposal. Not only are our survival skills led by maths, but many of our inherited human qualities are also nurtured and developed by Maths theories, like our spatial awareness, our problem-solving skills, our power to reason (which involves calculated thinking) and even our creativity and communication.

This means Maths not only allows us to live, but it also allows us to live a rich life where we can be unique beings.

Things that you wouldn’t expect to bear any relation to Maths do in fact come down to an underlying need for mathematics and the structure it brings to our everyday lives.

So how does Maths continue to benefit our wellbeing? Brain training is equally good for your body and brain as it nurtures both physical and psychological aspects of our bodies.

The NHS itself states that “keeping the mind active may have various benefits, including a reduced risk of dementia. In general, it would seem sensible to keep the mind as well as the body active.”

There are various things that keeping your mind active with cognitive training can do for you, such as:

  • Increase your ability to memorise
  • Cut down on the risk, and slow the decline, of mental illnesses such as Dementia
  • Improve your brain processing speed
  • Prevent boredom
  • Enhance concentration

Also, have you ever considered the fact that everything changes your brain so it’s continuously evolving and growing?

Each new person you meet, each new story you read, each new flower you smell… there are so many ‘firsts’ that continue to take place throughout our lives that we probably don’t even give a second thought to. However, when you sit back and think about it, your brain is constantly developing and being influenced by surroundings.

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