Q.10.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: (i) 100 km (ii) 25 km (iii) 15 km (iv) 10 km
Correct option is B) Speed of car in first 15 minutes = 40 km/h Distance covered = speed × Time taken 60 minutes = 1 hour 15 minutes = 6015 hour Distance covered = 240×6015=10km Speed of car in next 15 minutes = 60 km/h Distance covered = 60×6015=15km ∴ Total distance covered = (10+15)km = 25 km ∴ 25 km is correct
