Question

While driving jain travels 30 km at a uniform speed of 40 km per hour and next 30 km with a uniform speed of 20 km per hour find his average speed?

Answer 1

Explanation:

avg speed = total distance / time

so we need to calculate

time = distance / speed

= 30/40 + 30 / 20 hrs

= 9/4 hrs

So avg speed = 60 ÷ (9/4) =26.67 kmph