MCQ

Amar is twice as fast as Rohit and Rohit is thrice as fast as Chanda is. The journey covered by Chanda in 42 minutes will be covered by Amar in

#### Options

14 min 25 sec

7 min

28 min 37 sec

54 min 35 sec

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#### Solution

**7 min**

**Explanation:**

Let C's speed = x km/h

B's speed = 3x km/h

A's speed = 6x km/h

Therefore Ratio of speed of ABC = 6x : 3x : x = 6 : 3 :1

The ratio of times taken`=1/6:1/3:1=1:2:6`

If C takes 6 min, A takes 1 min.

If C takes 42 min. A then A takes`(1/6xx42)`=7 minutes.

Concept: Time, Distance and Speed(Entrance Exam)

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