A man is walking at the rate of 8 km/hr crosses a bridge in 15 minutes. The length of the bridge is  Choose one.
A) 1000 meters  B) 1050 meters  C) 1200 meters  D) 2000 meters  E) None of these
Explanation:   We need to get the answer in meters. So we will first of change distance from km/hour to meter/sec by multiplying it with 5/18 and also change 15 minutes to seconds by multiplying it with 60.   Speed=8âˆ—5/18=20/9m/sec   Time=15âˆ—60seconds=900seconds   2000 metersistance=Timeâˆ—Speed/2000 metersistance=20/9âˆ—900=2000meter   Option 2000 meters
<result>D</result>
A man is walking at the rate of 8 km/hr crosses a bridge in 15 minutes. The length of the bridge is