Question 153

If a man running at 15 kmph crosses a bridge in 5 minutes, the length of the bridge is

Solution

The length of the bridge will be equal to the distance covered by he man in 5 minutes at speed of 15 kmph.

Time = 5 min = $$\frac{1}{12}$$ hr

Distance = speed * time

= 15 * $$\frac{1}{12}$$ = 1.25 km

= 1.25 * 1000 m = 1250 m

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