20.A train is 125 m long. If the train takes 30 seconds to cross a tree by the railway line, then the speed of the train is :
(a) 14 km/hr
(d) 12 km/hr
(b) 15 km/hr
(c) 16 km/hr
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1
Answer:
14km/hr because it is 125m longer and it takes 30seconds to cross a tree so that's why 12km/hr
Answered by
2
Answer:
15km\h
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