Question

A car travels 30km at a uniform speed of 40km/hr and next 30km at a uniform speed of

20km/hr. Find its average speed.​

Answer 1

Answer:

Explanation:

A car travels 30 km at the uniform speed of 40 km/h and the next 30 km at a uniform speed of 20 km/h. Find its average speed. Answer : 26.67 km/hrs.

Answer 2

Answer:

The total time for the journey is given as,

t=d1/v1 +D2/v2

=30/40+30/20

=2.25 hour

The average speed is given as,

Vavg =d1+d2/t

=30+30/2.25

=26.67km/hr.

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