Recently, fuel price has seen a hike of \(20\%.\) Mr. \(X\) is planning to buy a new car with better mileage as compared to his current car. By what \(\%\) should the new mileage be more than the previous mileage to ensure that Mr. \(X\)’s total fuel cost stays the same for the month? (assuming the distance traveled every month stays the same)

(A) \(10\%\)
(B) \(17\%\)
(C) \(20\%\)
(D) \(21\%\)
(E) \(25\%\)

Answer: C

Source: Veritas Prep