A person walks 5 km at a speed of 4 km/h and then runs 10 km at a speed of 10 km/h. What is the tota

A. 2.5 hours

B. 3 hours

C. 3.5 hours

D. 4 hours

E. None of the above

Answer: B. 3 hours

Time walking = 5 km / 4 km/h = 1.25 hours; Time running = 10 km / 10 km/h = 1 hour. Total time = 1.25 + 1 = 2.25 hours.

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