Two trains 300 m and 225 m long are running in the same direction at the rate of 60 kmph and 67.5 kmph respectively(Assume one train behind the other train). In how much time will they cross each other?

132 s

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192 s

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252 s

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285 s

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Solution

The correct option is C
252 s

Relative speed = 7.5 kmph = $\frac{25}{12}$ m/sec

Total distance = 525 m

Time taken = $\frac{525 \times 12}{25}$ = 252 s

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Two trains 300 m and 225 m long are running in the same direction at the rate of 60 kmph and 67.5 kmph respectively(Assume one train behind the other train). In how much time will they cross each other?

The correct option is C 252 s Relative speed = 7.5 kmph = 2512 m/sec Total distance = 525 m Time taken = 525×1225 = 252 s

The correct option is C
252 s

Relative speed = 7.5 kmph = $\frac{25}{12}$ m/sec

Total distance = 525 m

Time taken = $\frac{525 \times 12}{25}$ = 252 s