APPLICATION OF PERCENTAGE | REAL LIFE MATHEMATICS

You may probably know that - “A percentage is a fraction with a denominator of 100. A percentage may be expressed using the term itself, such as 25 percent, or using the % symbol, as in 25%.” But have you ever thought what could be the real life applications of Percentage?

The calculation of various kinds of rates by way of percentages is the backbone of a wide range of mathematical applications, including taxes, restaurant tips, bank interest, academic grades, population growth, and sports statistics.

The better understanding of a multitude of everyday concepts and activities will be determined, directly or indirectly, by an appreciation of the ability to perform the percentage calculation.

Percentages play a key role in the following areas:

1.) Voting patterns and election results:

Percentages are used to take the large numbers of persons who may vote in an election, and reduce the figures to a result that is often easier to understand.

2.) Automobile performance:

Octane is a term that is familiar to everyone who has ever used gasoline as a fuel for a vehicle. In general terms, the octane rating refers to how much the fuel can be compressed before spontaneously igniting, an important factor in optimizing the performance of the internal combustion engine. While the public generally associates high octane requirements as required for certain motor vehicle models with more powerful engines and vehicle performance, the octane rating represents the percentage between the hydrocarbon octane (or similar composition) in relation to the hydrocarbon heptane. For example, an 87 octane rating (a common minimum in the United States) represents an 87 percent octane, 13 percent heptane mixture in the fuel.

3.) Clothing composition and manufacture:

Most clothing is sold with a tag or other indication as to its material composition. For example, it is common to see a label on a shirt indicating 65% cotton, 35% polyester, or a sweater marked as 100% wool.

4.) Vacancy rates:

The availability of vacant apartment space in a particular city is of great importance to prospective residents and existing apartment dwellers alike. The vacancy rate is expressed as a percentage to provide interested persons with an indicator as to the relative ease or difficulty to obtain particular types of rental accommodation. Vacancy rates can be viewed as of a particular period (for example, the vacancy rate in Spokane was 1.8% in April), or as a calculation increase or decrease from period to period (for example, the vacancy rate in Toronto fell 0.7% last month).

These were the real life applications of Percentage.

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SHORT TRICK TO MULTIPLY ANY TWO DIGITS NUMBERS.

You should observe to learn the working of this method. Step - 1: Multiply the unit digits (rightmost digits) of both the numbers, Step - 2: Add the cross product of the digits as shown below: Step - 3: Multiply the ten’s digits (leftmost digits) of both the numbers. Note: If the results obtained in step 1 and step 2 have more than one digit, note down the unit place of the result and carry over the ten’s place of the result to the left. Let us understand the process through some examples: Example 1: Solve 13 × 12 Step - 1: Multiply the unit digits (rightmost digits) of both the numbers, Step - 2: Add the cross product of the digits as shown below: Step - 3: Multiply the ten’s digits (leftmost digits) of both the numbers. So,13 × 12 = 156 Now before you get too excited, I have shown you only half of what you need to know. Suppose the problem is Example 2: Solve 28 × 35. Step- 1: Multiply the unit digits (rightmost digits) of both the numbers, Step - 2: Add the cross product of the digi...

SHORT TRICK TO CALCULATE THE SQUARE OF ANY TWO DIGITS NUMBER THAT ENDS WITH 5.

As you probably know, the square of a number is a number multiplied by itself. For example, the square of 9 is 9 x 9 = 81. This post is made to enable you to easily calculate the square of any two-digit or three-digit (or higher) number. That method is especially simple when the number ends in 5, so let’s do that trick now. To square a two-digit number that ends in 5, you need to remember only two things. 1. The answer begins by multiplying the first digit by the next higher digit. 2. The answer ends in 25. For example, to square the number 35, we simply multiply the first digit (3) by the next higher digit (4), then attach 25. Since 3 x 4 = 12, the answer is 1225. Therefore, 35x35 = 1225. Our steps can be illustrated this way: How about the square of 85? Since 8 x 9 = 72, we immediately get 85 x 85 = 7225. Similarly we can calculate the following squares 15 x 15 = 225 25 x 25 = 625 35 x 35 = 1225 45 x 45 = 2025 55 x 55 = 3025 ...

REAL LIFE APPLICATIONS OF TRIGONOMETRY | REAL LIFE MATH.

Triangle trigonometry has many applications that help find unknown lengths or angle measurements. For instance, paintings, motion pictures, and televisions have ideal viewing distances in order to create the greatest possible image from the eye. The triangle is formed between the view and the top and bot- tom (or the sides) of the viewing object. Here are the 5 best Real Life Applications of Trigonometry. 1.) In Astronomy Astronomers use triangle trigonometry to determine distances and sizes of objects. For example, the distance from the earth to the moon, and earth to the sun, can be found by identifying their angles from the horizon during an eclipse. The height of a solar flare can also be determined by measuring the angle from the sun to the tip of the flare, and using distance information about the earth and sun. 2.) In Engineering Work Trigonometry can be used to find unknown lengths or angle measurements. In a situation involving right triangles, only a side le...

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