A car takes 6 hours to cover a distance of 300 km. If its speed is increased by 10 km/h, how much time will it take?
Show answer & explanation
Correct answer: A
Explanation
Distance = 300 km
Initial time = 6 hours
Initial speed = 300 ÷ 6= 50 km/h
New speed = 50 + 10= 60 km/h
New time = 300 ÷ 60= 5 hours