A train moves at the speed of 30km hr -1 in the 1st 15 minutes and then with the speed of 40 km hr -1 in the next 15 minutes and then with the speed of 60 km hr -1 in 30 minutes. Find the average speed of the train. Please Find Me The Answer Fast !!!
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a) for 1/4th of an hour, it travels at 30 km/h => distance covered = 30/4 = 7.5 km
b) for next 1/4th of an hour, it travels at 40 km/h => distance covered = 40/4 = 10 km
c) for next 1/2 of an hour, it travels at 60 km/h => distance covered = 60/2 = 30 km
hence, in one hour, the train travels 47.5 km, giving the speed to be 47.5 km/h
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