Question

A train covers 108 km in the first two hours , 36 km in the next half an hour and 90 km in the next one and a half hour. Find the average speed of train during the whole journey .

Answer 1

Hey mate, refer to the above mentioned attachment.

Hope this answer helps you...

Answer 2

the total distance = 108+36+90= 234km/h
total time = 2h+0.5h+1.5h = 4h
avg.speed = total distance /total time
= 234/4
= 58.5km/h

so, 58.5km/h is your answer !!
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