Question

a train 130m long which runs with speed 45km/h if it cross a pool in 30 sec find the length of pool

Answer 1

Given Speed = 45km/h:

1 hour = 45 km

1 hour = 45 x 1000 = 45 000m

1 min = 45 000 ÷ 60 = 750 m

1 sec = 750 ÷ 60 = 12.5 m

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Find distance covered in 30 sec:

1 sec = 12.5 m

30 sec = 12.5 x 30 = 375 m

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Find distance of the pool:

375 - 130 = 245 m

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Answer: The pool is 245 m long

Answer 2

The length of the pool is 245m.