A car covers a distance of 36 km in 60 minutes. If its speed is decreased by 20 km/hr, then what will be the time (in minutes) taken by it to cover the same distance?
Show answer & explanation
Correct answer: A
Explanation
Initial speed = 36 / 1= 36 km/h
New speed = 36 - 20= 16 km/h
Time = 36 / 16 hours= 9 / 4 hours= 135 minutes