Question

Rosy waxes 2/3 of her car with 1/4 bottle of car wax. At this rate, what fraction of the bottle of car wax will Rosy use to wax her entire car?

A: 1/8
B: 1/6
C: 3/8
D: 3/4

Answer 1

(2/3) / (1/4) = 1 / x.....2/3 of car to 1/4 car wax = 1 car to x car wax
cross multiply
(2/3)(x) = (1/4)(1)
2/3x = 1/4
x = (1/4) / (2/3)
x = 1/4 * 3/2
x = 3/8 bottle of car wax <==