What is 15/21 as a percent?

15/21 is 71.42857142857143% as a percent

How to convert fractions as percent

What Are Percentage?

Percent is derived from Latin word "per centum" which means "by a hundred". Percent can be thought of a fraction where denominator is always 100, and we add % sign to the fraction. For example, fraction 15/21 means 71.42857142857143 %.

Method 1 to convert 15/21 as a percent ?

Steps:

Divide the top of the fraction by the bottom,

Then multiply the result by 100 and read off the answer !

Example: Convert 15 21 as a percent?

First divide 15 by 21: 15 ÷ 21 = 0.7142857142857143

Then multiply by 100: 0.7142857142857143 × 100 = 71.42857142857143

Answer: 15 21 = 71.42857142857143%

(Remember to put the "%" sign so people know it is "per 100")

Method 2 to convert 15/21 as a percent ?

OR you can multiply the top by 100 first then divide by the bottom number:

Example: Convert 15 21 as a percent?

Multiply 15 by 100 first, then divide by 21

1500 ÷ 21 = 71.42857142857143

Answer: 15 21 = 71.42857142857143%

(Remember that "%" sign!)

Method 3 to convert 15/21 as a percent ?

Or Move the Decimal 2 Places

After dividing, instead of multiplying by 100 we can just move the decimal point 2 places to the right, then add the %

Example: Convert 15 21 as a percent?

First divide 15 by 21:

15 ÷ 21 = 0.7142857142857143

Move the decimal point 2 places to the right

0.7142857142857143%

2 places

71.42857142857143%

Remember to add the "%" sign: 71.42857142857143%

Example of fractions in real life - 1

Lets say in a maths test, you score 19 marks out of 20, it means you scored 95%.

Example of fractions in real life - 2

Lets say in a school with 250 students, 100 are boys, it means that the percentage of boys in school is 40 %

What is 15/21 as a percent?