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Question

A train covers first 140 km in 2 hours, next 180 km in 3 hours and the last 40 km in 1 hour. Find the average speed of the train.


A

100 kmh

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B

80 kmh

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C

60 kmh

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D

40 kmh

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Solution

The correct option is C

60 kmh


Average speed = Total distanceTotal time taken

Now, total distance travelled = 140 + 180 + 40 km

= 360 km

and total time taken = 2 + 3 + 1 hours

= 6 h

Average speed of train = 3606

= 60 kmh


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