A train 360 m long is running at a speed of 45 km | hr. In what time will it pass a bridge 140 m long?
- 30 sec
- 35 sec
- 40 sec
- 45 sec
- 50 sec
Explanation
Speed=45×518m/sec=252m/sec Total distance to be covered= 360+140)m=500mFormulaforfindingTime=Distance Speed∴Required time=(500×225)sec=40sec.
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