Two tourist who are at a distance of 40 km from their hotels wants to reach the hotel. in the shortest possible time. They have a bicycle which they decide to use turn by turn They agree to leave the bicycle intermediate points between which one walks and other ride the bicycle both can walk with the speed of 5km/hr and ride the bicycle with 15 km/hr.
In this question for how much time the bicycle will remain unused
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Answer:
2 hours
Explanation:
Distance (S) = 40km
Speed (u) = 5+15 = 20Km/hr
Time (t) = ?
Time = distance / speed
= 40/20
= 2hr
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