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? select one:
a. 180 m
b. 240 m
c. 260 m
d. 280 m
Answers
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Speed = 54 x 5/18 m/sec = 15 m/sec.
Length of the train = (15 x 20)m = 300 m.
Let the length of the platform be x metres.
Then, (x + 300) / 36 = 15
x + 300 = 540
x = 240 m.
So the answer is 240M
option B
Length of the train = (15 x 20)m = 300 m.
Let the length of the platform be x metres.
Then, (x + 300) / 36 = 15
x + 300 = 540
x = 240 m.
So the answer is 240M
option B
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