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  2. A train coveres first 100 km at a speed of 50km/hr and next 100km/hr at the speed of 25km/hr find its average speed.
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A train coveres first 100 km at a speed of 50km/hr and next 100km/hr at the speed of 25km/hr find its average speed.

Answers (1)
S Shubham Krishnan

t1 = 100/50  = 2 hr
t2 = 100/25 = 4 hr
total time = 4+2 = 6 hr
total distance = 100 + 100 = 200Km
average speed = total distance/total time
                      = 200/6
                      = 100/3 Km/hr

 

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