Speeds of two boats A and B in still water are
10 km/hour and 12 km/hour respectively. At
10 a.m. A starts along the current and B starts
against the current from the places C and D
respectively. If the distance between C and D
be 121 km, when will A and B meet?
neede of the two hosts A and B downstream
Answers
Answered by
2
Answer:
4 hours
Step-by-step explanation:
Let the speed of stream = y km/h
Since Boat A is moving downstream with 12 km/h
Speed of boat A
= (12+y)km/h
Since Boat is moving upstream with 15km/h
Speed of boat B
= (15−y) km/h
Both the boats are moving in opposite direction
Relative speed of A and B
=12+y+15−y
=27 km/h
Time=DistanceRelative Speed=10827=4 hours
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