A train crosses a platform and a tunnel in 18 and 32 seconds respectively. The speed of the train and length of the train are 45 km/hr and 140 metres respectively. Find that the length of the platform is approximately what percent less than the length of tunnel?

A train crosses a platform and a tunnel in 18 and 32 seconds respectiv

1.	A train crosses a platform and a tunnel in 18 and 32 seconds respectively. The speed of the train and length of the train are 45 km/hr and 140 metres respectively. Find that the length of the platform is approximately what percent less than the length of tunnel?
A.	72%
B.	67%
C.	82%
D.	61%
E.	51%
Answer» C. 82%

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A train crosses a platform and a tunnel in 18 and 32 seconds respectively. The speed of the train and length of the train are 45 km/hr and 140 metres respectively. Find that the length of the platform is approximately what percent less than the length of tunnel?

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