A cyclist covers a distance of 120 kilometers in 4 hours. If he increases his speed by 10 km/h, how

A. 3 hours

B. 3.5 hours

C. 4 hours

D. 4.5 hours

E. None of the above

Answer: B. 3.5 hours

Original speed = 120 km / 4 h = 30 km/h. New speed = 30 km/h + 10 km/h = 40 km/h. Time = 120 km / 40 km/h = 3 hours.

Posted in: Time, Distance and Speed - Aptitude - Mathematics