A bullet train 80m long is running at 240 kmph. In how much time will it pass a platform 520m long?

9 secs

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10 secs

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12 secs

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8 secs

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6 secs

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Solution

The correct option is A
9 secs

Distance travelled = (80 + 520) m = 600 m,

Speed = 240 $\times$ $\frac{5}{18} = \frac{200}{3}$ m/sec

Time = 600 $\times$ $\frac{3}{200}$ = 9 seconds

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