Multiple choice

Sonu rides at a rate of 10 km/hr, but stops for 10 minutes to take rest at the end of every 15 km. How many hours will he take to cover 100 km?

  1. 10

  2. 11

  3. 11.5

  4. 10.5

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Time spent riding = 100 km / 10 km/hr = 10 hours. He stops at 15, 30, 45, 60, 75, 90 km. That is 6 stops. 6 stops * 10 minutes = 60 minutes = 1 hour. Total time = 10 + 1 = 11 hours.

AI explanation

The total riding time is the total distance divided by the speed, which is 100 km divided by 10 km/hr, totaling 10 hours. During the journey, Sonu takes a rest after every 15 km, resulting in 100 divided by 15, which gives 6 full rest periods of 10 minutes each, adding 60 minutes or 1 hour to the travel time. The total time to cover the distance is 10 hours plus 1 hour, giving a result of 11 hours.

Keep practicing — related questions