Trains Boats and Streams Practice Test 5 with solutions

Question : 8 of 8

Marks: +1, -0

A train crosses a 162 m long platform in 18 seconds and other 120 m long platform in 15 seconds. The length of the train is:

Solution:

Let length of the train be x m; then

{162+x}/{18}

{120+x}/{15}

⇒ 5 (162 + x) = 6 (120 + x)
⇒ 6x – 5x = 810 – 720
∴ x = 90 m

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