Question

A man walking at a speed of 5 km/hr crosses a bridge in 15 mins. What would be the length of the bridge in metres? ​

Answer 1

Answer:

1.25 km

Step-by-step explanation:

1 km =1000 meters

5 km=5000 meters  

5000/60. Because one hour Equals to 60 minutes

83.33333 meters per minute

Multiply 15 minutes

1250 meters per 15 min

That equals to 1.25 km per 15 min s.

That means 1.25 km of length of bridge.

Answer 2

speed = 5km/h = 5/18 = 25/18 m/s

time = 15 minute = 15*60 = 900s

length = 25/18 * 900

= 1250m