A bus covers a distance of 10 km in 12 minutes. If its speed is decreased by 25 km/h,then the time (in minutes) taken by the bus to cover the same distance is:
Answer & explanation
Correct answer: option 4
We know ,
Speed = \(\frac{Distance}{Time}\)
12 min =12× \(\frac{1}{60}\) hours
Speed = \(\frac{10× 60 }{12}\)
= 50 km/h
Reduced speed = 50 - 25 = 25 km/h
Time = \(\frac{Distance}{Speed}\)
= \(\frac{10}{25}\)
= 24 minutes