The speed of a car is 36 km/h. How much time(in minutes) will a bus traveling at one-fifth of the speed of the car take to cover a distance of 900 m?

7 min 7.5 min 8 min 8.5 min

7.5 min

Speed of car = 36 km/h 36 km/h = 36 × \(\frac{5}{18}\) = 10 m/sec According to question , Speed of bus = \(\frac{1}{5}\) × 10 = 2 m/sec Time taken to cover 900 m = \(\frac{DIstance}{Time}\) = \(\frac{900}{2}\) = 450 sec = 7.5 minutes