A man walking at the rate of 5 km/hr crosses a bridge in 15 minutes. The length of the bridge (in meters) is

\par Speed = \left[5\times \frac{5}{18}\right]  \par m/sec =  \frac{25}{18}  \par m/sec

\par Distance covered in 15 minutes = \left [ \frac{25}{18}\times 15\times 60 \right ]  \par m = 1250 m.