Discussion of Question with ID = 069 under Distance-and-Time

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Question

A school bus covers a certain distance in 4 hours at a speed of 56 km/h. At what speed should it travel to cover the same distance in 7 hours?

A

32 kmph.

B

33 kmph.

C

31 kmph.

D

34 kmph.

Soln.
Ans: a

Let t1, v1 and t2, v2 be the speeds and times for covering the same distance. We have t1 × v1 = t2 × v2. From here we get v2 = ${4 × 56}/7$ = 32km/h.


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