A train reches from delhi to agra in 4 hours at speed of 25 60,80and 40 kilometre per hour in each successive hour respectively. find the average speed of train and verify your answer.
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Speed of train =120 km.Distance=960 km
Time =
S
D
=
120
960
= 8 hours
it stops at every 80 km then no. of stoppage =
80
960
=12
For 11 stoppages time taken =11×4=44min
Total time taken = 8 hrs 44 minutes.
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