Time and Distance Practice Test 1 with solutions

Question : 27 of 40

Marks: +1, -0

Bob is twice as fast as Deepak and Era is thrice as fast as Deepak. If Era travels a certain distance in 20 minutes, find the time taken by Bob to cover same distance.

20 minutes
30 minutes
10 minutes
60 minutes
50 minutes

Validate

Solution:

Let Deepak’s speed = 10 km/hour
Bob’s speed = 20 km/hour
Era’s speed = 30 km/hour
Distance covered =

30 × {20}/{60}

= 10 km
Time taken by Bob =

{10}/{20}

1/2

= 30 minutes

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