Chris’s convertible gets gas mileage that is 40 percent higher than that of Stan’s SUV. If Harry’s hatchback gets gas

[VJesus12]

Chris’s convertible gets gas mileage that is 40 percent higher than that of Stan’s SUV. If Harry’s hatchback gets gas mileage that is 15 percent higher than that of Chris’s convertible, then Harry’s hatchback gets gas mileage that is what percent greater than that of Stan’s SUV?

(A) 25%
(B) 46%
(C) 55%
(D) 61%
(E) 66%

[spoiler]OA=D[/spoiler]

Source: Princeton Review

[Scott@TargetTestPrep]

Chris’s convertible gets gas mileage that is 40 percent higher than that of Stan’s SUV. If Harry’s hatchback gets gas mileage that is 15 percent higher than that of Chris’s convertible, then Harry’s hatchback gets gas mileage that is what percent greater than that of Stan’s SUV?

(A) 25%
(B) 46%
(C) 55%
(D) 61%
(E) 66%

[spoiler]OA=D[/spoiler]

Solution:

We can let Stan’s SUV’s gas mileage be 100. Thus Harry’s hatchback’s gas mileage is:

100 x 1.4 x 1.15 = 161

We see that 161 is 61% greater than 100.

Answer: D