The ratio of the walking speeds of A and B is 3 : 5. If B takes 18 minutes to cover a certain distance, how much time will A take to cover the same distance?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 30 min.
Speed ratio A : B = 3 : 5
Time ∝ 1/Speed
B’s time = 18 minutes
A’s time = (5/3) × 18 = 30 minutes