Question

80% of a number is 96.

What is 25% of that same number?

A.
20

B.
30

C.
40

D.
120

Answer 1

B. 30

Explanation:

Let x represent the number. Then we have ...

96 = 0.80x

Dividing by 0.80 gives ...

x = 96/0.80 = 120

Then 25% of the number is ...

0.25 × 120 = 30

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If you like, you can write the proportion ...

x/96 = 25%/80% . . . . . . . where x represents 25% of the number

x = 96×(25/80) = 30 . . . . this is the 25% value that we want