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. Find the total distance covered by the car in these 30 minutes.
Answer
Distance covered in 1st 15 minutes = 40 km/h x 15 minutes
= 40 km/h x ¼ h
= 10 km
Distance covered in 2nd 15 minutes = 60 km/h x 15 minutes
= 60 km/h x ¼ h
= 15 km
Therefore, Total distance covered = 10 km + 15 km
= 25 km