### A runs twice as fast as B and B runs thrice as fast as C. The distance covered by C in 72 minutes, will be covered by A in:

A. 18 minutes B. 24 minutes C. 16 minutes D. 12 minutes Answer: Option D
Ratio of the speed of A, B and C = 6 : 3 : 1 Then, ratio of time taken; $=\frac{1}{6}: \frac{1}{3}: 1=1: 2: 6$ Hence, time taken by A $=\frac{72}{6}=12$ minutes.