Trains Boats and Streams Practice Test 2 with solutions

Question : 1 of 40

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A train running at speed of 90 km/hr crosses a platform double its length in 36 seconds. What is the length of the platform in metres?

Solution:

Let lengths of train and platform be x and 2x m; then,
x + 2x = 90 ×

5/{18}

× 36
⇒ 3x = 900
∴ x = 300 m
Hence, length of the platform = 2x m = 2 × 300 = 600 m

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