Question

a man walking at the rate of 4 kilometre per hour cross a bridge in 18 minutes find the length of a bridge in metres

Answer 1

Answer:

1200 m

Step-by-step explanation:

Given,Speed of the man = 4 km/hr

                                         = 4 * (1000/60) m/min

                                         = (200/3) m/min.

Given,Time taken to cross the bridge = 18 minutes.

∴ Length of the bridge = Speed * Time

                                      = (200/3) * 18

                                      = 1200 m.

Hope it helps!

Answer 2

Answer:

1200m

Step-by-step explanation:

Speed = 4 km/hr

4 * (1000/60) m/min

(200/3) m/min.

Time taken is 18 minutes.

Length = Speed * Time

(200/3) * 18

1200 m.