Question

A car is moving with a speed of 20 km/h. How long
will it take to cover a distance of 3957 metre?​

Answer 1

As we know that

Speed= distance/time

Or time = distance/speed

According to your question

Speed=15m/s

and. Distance=1.2km. ,we must change kilometer in meter because given speed is in m/s

D= 1.2km = 1.2×1000m =1200meter

Time = distance/ speed

1200/15 =80second

Or. 1min and 20 sec will be your answer.

Answer 2

Answer:

Step-by-step explanation:

20 km = 1hour

1 km = 1/20 hour

3.957 km = 3.957 * 0.05

                = 0.19785 hours

                = 11.871 minutes