Trains Boats and Streams Practice Test 4 with solutions

Question : 12 of 40

Marks: +1, -0

How many seconds will a 500 m long train to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr?

Validate

Solution:

Their relative speed = (63 – 3) km/hr = 60 ×

5/{18}

m/s =

{50}/3

m/s
Required time =

{500}/{{50}/3}

{500×3}/{50}

= 30 sec.

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