A tune-up increases a car's fuel efficiency by 5%. If a car averaged 20 miles per gallon before the tune-up, how many miles per gallon will it average after the tune-up?

The correct answer is D. 21. See the full explanation below for the reasoning.

Question

A tune-up increases a car's fuel efficiency by 5%. If a car averaged 20 miles per gallon before the tune-up, how many miles per gallon will it average after the tune-up?

Options

A25
B22
C201/2
D21

How the community answered

(53 responses)

A
9% (5)
B
4% (2)
C
4% (2)
D
83% (44)

Community Discussion

No community discussion yet for this question.

Full ASVAB Practice