1.

A is twice as fast as B and B is thrice as fast as C is. The journey covered by C in 54 min will be covered by B in :

Answer»

18 min



Let C's speed = X kmph Then, B's speed = 3X kmph and A's speed = 6X kmph.
Ratio of the speed of A, B and C = 6X : 3X : X = 6 : 3 : 1
Ratio of time taken = 1/6 : 1/3 : 1 = 1 : 2 : 6
If C TAKES 6 min, then B takes 2 min
If C takes 54 min, then B takes (2/6) x 54 min. = 18 min.



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