a train moves a distance of 10 M with a constant speed of 40 m per second and move the next 5 M with a constant speed of 30 M per second calculate its average speed
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given data: 1) distance -10m, speed -40m/sec. 2)distance -5m, speed- 30m/sec. to find : average speed =total sum of all numbers /number of items in the set.... solution: 30+40/2 = 35 ans: the average speed of train is 35m/sec..........
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