Question

A car covers a certain distance in 50 minutes if it runs at45 km/hr .How much time will it take cover the same distance at a speed of 30km/hr​

Answer 1

Answer:

0.8 hrs.

Step-by-step explanation:

Given :

Speed = 45 km / hr

Time = 50 min or 5 / 6 hr .

We know :

Speed = Distance / Time

Distance = 45 × 5 / 6 km .

Now in second case :

Given :

Speed = 30 km / hr

We have distance = 45 × 5 / 6 km

Time = Distance / Speed

Time = 30 × 6 /  45 × 5 hr

Time = 12 / 15

Time = 0.8 hrs.

Answer 2

Answer:

5/4

Step-by-step explanation:

Given:

speed of the car=45 km/ hr

Time taken to reach=50 min=50/60 hrs

distance travelled=speed×time

=45×50/60

=37.5 km

New speed=30 km/ hr

Distance =37.5 km

Time=distance/ speed

=37.5/30

=1.25 hrs

=5/4 hrs