Question

a driver drives a car with 40km/hr to cover a distance of 30km. what will be the speed of a car for the next 20 km to have the average speed of 30km/hr​

Answer 1

Explanation:

The total time for the journey is given as,

t=

v

1

d

1

+

v

2

d

2

=

40

30

+

20

30

=2.25hour

The average speed is given as,

v

avg

=

t

d

1

+d

2

=

2.25

30+30

=26.67km/h

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