Question

A car travels 40 km at a speed of 40 km per hour. Calculate the average speed for the
entire journey is 60 kmph
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Answer 1

Answer:

The time taken will be 1 hour 30 mins.

Answer 2

Answer:

Av. Speed = (total distance travelled÷total time taken)

Now coming to this question,

Time taken in first 40km=(40÷80) =1/2 hour

Time taken to travel next 40km=(40÷40) =1 hour

Now total time taken to travel 80km= 1/2+1 = 1.5hours,

According to formula mentioned above,

Av. Speed = 80/1.5 = 53.33km/h.

Hope that it is clear.