Question

21 is 75% of what number?

Answer 1

21 is 75% of 28.

75/100 × x = 21

Multiplying both sides by 100 and dividing both sides by 75,

we have x = 21 × 100/75

x = 28

If you are using a calculator, simply enter 21×100÷75, which will give you the correct answer as well.

Answer 2

28

Explanation:

You divide 21 by 3 and then add it again!