Question

A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. The total distance covered by the car is????

Answer 1

For the first part of journey,

Speed=40km/h and time=15min=1/4 hour

Using, speed=distance/time

Distance=40 x 1/4=10km

For the second part of journey,

Speed=60km/h and time=15 min=1/4 hour

Then distance=60 x 1/4=15 km

Total distance travelled in whole journey=10+15=25 km