## X percent of what number is Y calculator

Percentage Calculator

This calculator will help you solve X percent of what number is Y. Enter the percent in the first input box and Y in the second box and press calculate. The calculator will display a step by step tutorial on how to arrive on the answer.

## What is percentage?

Before you learn how to find Percent of what number is Y, you need to know what percentage is. It refers to the representation of a number as a ratio of 100. Percent is derived from the word per 100.

## How to solve X percent of what number is Y

Follow the examples below to find out how you can solve X percent of what number is Y.

Example 1: 50 percent of what number is 20

We know the percentage and the answer but not the number.

Step 1: Write the problem as an expression

50/100 x X = 20

Step 2: Simplify the expression

X= 20 x 100/50

Step 3: 2000/50

=40

Therefore 50 percent of 40 is 20

Example 2: 70 percent of what number is 10

Step 1: Write the problem as an expression

70/100 x X =10

Step 2: Simplify the expression

X= 10 x 100/70

Step 3: 1000/70

X= 14. 29

Therefore 70 percent of 14.29 is 10

Example 3: 42 percent of what number 90

Step 1: Write the problem as an expression

42/100 x X = 90

Step 2: Simplify the expression

X= 90 x 100/42

Step 3: 9000/42

=214.29

Therefore 42 percent of 214.29 is 90