# How Long Does a Train 110 Meters Long Running at the Speed of 72 km/h Take to Cross a Bridge 132 Meters in Length?

### Computer MCQs Series for PPSC, FPSC – Most Repeated MCQs | Set 6

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## Explanation

How long does a train 110 meters take to cross a bridge 132 meters in length?

Total length = 110 + 132 = 242 meters

Speed is given in km/h but length is meters so speed will be changed to m/sec.

In order to figure out time

Time = distance/speed

Time = ?

## Solution

Given speed = 72 km/h

Speed in m/sec = (72 x 1000)/3600

Speed in m/sec = 20 m/sec

Total length = 110 + 132 = 242 m

Now,

Time = distance/speed

Time = 242/20

### Conclusion

A train 110 meters long running at the speed of 72 km/h takes 12.1 seconds to cross a bridge 132 meters in length.
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