Question

A car travels 60km at a uniform speed of 40km/h and the next 60km at a uniform speed
of 20km/h. find the average speed.

Answer 1

Answer:

30 km/h

Explanation:

Answer 2

Answer:

26.67km/h

Explanation:

Avg speed = total distance/total time

total distance=60km+60km

                      =120km

total time=60/40+60/20

               =1.5+3

               =4.5

average speed=120/4.5

                         =26.67 km/h    

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