Question

A car covers 30 km in 2 hrs and next 40 km at 20 km / h. Find its average speed in the entire journey.​

Answer 1

Answer:

26.67 km/h

Step-by-step explanation:

The total time for the journey is given as,

t=d1÷v1+d2÷v2

=30÷40+30÷20

=2.25hour

The average speed is given as,

average velocity =d1+d2÷t

=30+30÷2.25

=26.67km/h

Thus, the average speed of the car is 26.67km/h.

Answer 2

A car covers 30 km in 2 hrs and next 40 km at 20 km / h. Find its average speed in the entire journey.