Question

A car can travel a certain distance in 9 hours at the speed of 54km/h. by how much should it's speed be increases so that it can travel the same distance in 6 hours​

Answer 1

Step-by-step explanation:

To complete 1km distance with speed =50kmhr it tkes time t

1

=

50

1

s

To complete 1km distance with speed =40kmhr it tkes time t

1

=

40

1

s

Average speed=

(1/50)+(1/40)

1+1

=44.44m/s