Question

A train travels 20 km at a uniform speed of 60 km/h and the next 20 km at a uniform speed of 80km/h. calculate its average speed.

Answer 1

Answer:

vel = 6.85 km /h

Explanation:

average vel =  2* 60 * 80/60+80

                     = 6.85 km /hr

Answer 2

Answer:

6.85 km per hour

Explanation: