'P' is twice as fast as Q and Q is thrice as fast as R. The journey covered by R in 54 minutes will be covered by Q in:A18 minB14 minC23 minD25 minAnswer: A. 18 min Read Explanation: Since the speed of Q is 3 times as that of R, the time taken by Q will be 1/3 rd of the time taken by R Time taken by Q = 54/3 minutes = 18minutes .Read more in App