A is twice as fast as B and B is thrice as fast as C. The journey covered by C

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A is twice as fast as B and B is thrice as fast as C. The journey covered by C in 42 minutes will be covered by A in

Options:

A . 7 Minutes

B . 14 Minutes

C . 28 Minutes

D . 63 Minutes

Answer: Option A

Let C is speed be the x meters /min
Then B is speed = 3x metres/min and A's speed = 6x metres / min
The ratio of a speed of A and C = Ratio of times taken by C and A.
6x : x = 42: y min

= 7 Minutes

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