Percentages

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It is often used to compare proportions.

Front

How do you calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 20% of 50, calculate 50 * 0.20 = 10.

Front

What does it mean if 15 is 75% of a number?

Back

It means that 15 is three-quarters of that number. To find the number, divide 15 by 0.75, which equals 20.

Front

If 73 is 100% of a number, what is that number?

Back

The number is 73, as 100% of a number is the number itself.

Front

How do you find what percent one number is of another?

Back

To find what percent one number is of another, divide the first number by the second number and multiply by 100. For example, to find what percent 15 is of 150, calculate (15/150) * 100 = 10%.

Front

What is 18 as a percentage of 24?

Back

18 is 75% of 24, calculated by (18/24) * 100.

Front

What is 12 as a percentage of 20?

Back

12 is 60% of 20, calculated by (12/20) * 100.

Front

What is the formula for finding the percentage increase?

Back

The formula for percentage increase is: ((New Value - Old Value) / Old Value) * 100.

Front

What is the formula for finding the percentage decrease?

Back

The formula for percentage decrease is: ((Old Value - New Value) / Old Value) * 100.

Front

What does it mean if a price is marked down by 20%?

Back

It means that the price is reduced by 20% of its original price.