guys help in math! thanks

Mathematics
Tutor: None Selected Time limit: 1 Day

A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, what is the length of the platform?


Feb 24th, 2015

Answer: Option B

Explanation:

Speed = 54 x 5 m/sec = 15 m/sec.
18

Length of the train = (15 x 20)m = 300 m.

Let the length of the platform be x metres.

Then, x + 300 = 15
36

x + 300 = 540

x = 240 m.


Feb 24th, 2015

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Feb 24th, 2015
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Feb 24th, 2015
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