Question

What must be done to each side of the equation to find the value of n?

4/5 n = 20

A)
divide by 5/4

B)
divide by 4/5

C)
multiply by 5/4

D)
multiply by 4/5

Answer 1

The answer is C.

This equation requires us to multiply by the reciprocal of 4/5. The reciprocal is simply the fraction flipped (5/4). Once multiplied, n = 25.