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3 years ago

25% of what number is 21?

2 answers:

7 0

Let the unknown number be x.

25% of x is 21

25% * x = 21

0.25 * x = 21

0.25x = 21

0.25x/0.25 = 21/0.25

x = 84

Answer: The number is 84.

Tcecarenko [31]3 years ago

5 0

Hey there! :D

25% represents a quarter of a number.

If 21 is a quarter of a number, multiply it by 4.

21*4= 84

21 is 25% of 84.

I hope this helps!
~kaikers

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