A train crosses a pole in 15 sec and a 100 m long platform in 25 sec find its length
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Answered by
10
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Let the length of the train be x metres and its speed by y m/sec.
Then, x/y= 15 => y = x /15
Therefore x + 100/25 = x/15
=> 15(x + 100) = 25x
=> 15x + 1500 = 25x
=> 1500 = 10x
=> x = 150 m.
.
.
Let the length of the train be x metres and its speed by y m/sec.
Then, x/y= 15 => y = x /15
Therefore x + 100/25 = x/15
=> 15(x + 100) = 25x
=> 15x + 1500 = 25x
=> 1500 = 10x
=> x = 150 m.
harshansknspmc:
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Answered by
5
SolutionLet the length of the train be x metres. Then,
x/15 = (x+100)/25
25x = 15(x+100)
x = 150 m
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