# What is 90 percent of 100 (90% of 100)?

Answer: 90 percent of 100 is 90

## Fastest method for calculating 90 percent of 100 (90% of 100)

Assume the unknown value is 'Y'

Y = 90 / 100

Y = 90 / 100 x 100

Y = 90

Answer: 90 percent of 100 is 90

If you want to use a calculator, simply enter 90÷100x100 and you will get your answer which is 90

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## Have time and want to learn the details?

Let's solve the equation for Y by first rewriting it as: 100% / 100 = 90% / Y

Drop the percentage marks to simplify your calculations: 100 / 100 = 90 / Y

Multiply both sides by Y to transfer it on the left side of the equation: Y ( 100 / 100 ) = 90

To isolate Y, multiply both sides by 100 / 100, we will have: Y = 90 ( 100 / 100 )

Computing the right side, we get: Y = 90

This leaves us with our final answer: 90% of 100 is 90