Two tourist A and B who are at a distance of 40 km from their camp must reach it together in the shortest possible time. They have one bicycle and they decide to use it in turn. 'A' started walking at a speed of 5 km hr and B moved on the bicycle at a speed of 15 km hr.After moving certain distance B left the bicycle and walked the remaining distance. A, on reaching near the bicycle, picks it up and covers the remaining distance riding it. Both reached the camp together. (a) Find the average speed of each tourist. (b) How long was the bicycle left unused?
Two tourist A and B who are at a distance of 40 km from their camp must reach it together in the shortest possible time. They have one bicycle and they decide to use it in turn. 'A' started walking at a speed of 5 km hr and B moved on the bicycle at a speed of 15 km hr.After moving certain distance B left the bicycle and walked the remaining distance. A, on reaching near the bicycle, picks it up and covers the remaining distance riding it. Both reached the camp together. (a) Find the average speed of each tourist. (b) How long was the bicycle left unused?
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Transcribed Image Text:Two tourist A and B who are at a distance of
40 km from their camp must reach it together in
the shortest possible time. They have one bicycle
and they decide to use it in turn. 'A' started
walking at a speed of 5 km hr and B moved on
the bicycle at a speed of 15 km hr. After moving
certain distance B left the bicycle and walked
the remaining distance. A, on reaching near the
bicycle, picks it up and covers the remaining
distance riding it. Both reached the camp together.
(a) Find the average speed of each tourist.
(b) How long was the bicycle left unused?
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