Question

64 is 80% of what?

A. 64 x n = 80; 0.8
B. 0.64 x n = 80; 125
C. 64 = 0.80 x n; 80
D. 80 = 64 x n; 1.3

Answer 1

C. 64 = 0.80 x n; 80

Explanation:

In this context "of" means "times." The given relation can be translated to ...

64 is 80% of what

64 = 0.80 × what

If we let "n" represent the number that would answer "what", then this is ...

64 = 0.80 × n

__

Dividing by the coefficient of n, we find the value of n to be ...

64/0.80 = n = 80