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
(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 <==
