# What percent of 30 is 12?

Answer: 40 percent of 30 is 12

## Fastest method for calculating what percent of 30 is 12

Assume the unknown value is 'Y', and 12 of 30 can be written as:

Y = 12 / 30

By multiplying both numerator and denominator by 100 we will get:

Y = 12 / 30 x 100 / 100 = 40 / 100

Y = 40%

Answer: 40 percent of 30 is 12

If you want to use a calculator, simply enter 12÷30x100 and you will get your answer which is 40

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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% / 30 = Y% / 12

Drop the percentage marks to simplify your calculations: 100 / 30 = Y / 12

Multiply both sides by 12 to isolate Y on the right side of the equation: 12 ( 100 / 30 ) = Y

Computing the left side, we get: 40 = Y

This leaves us with our final answer: 40 percent of 30 is 12