. A race-boat coveres a distance of 66 km
down stream in 110 minutes. It covers this
distance upstream in 120 minutes. The
speed of the boat in still water is 3.45
km/hr. Find the speed of the stream.
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2
Answer:
When the racing boat is going downstream its speed is (34.5+x) km/hr and while going upstream its speed is (34.5-x) km/hr. x = 36–34.5 = 1.5 km/hr. Check: 66/(34.5-x) = 66/(34.5–1.5) = 66/33 = 2 hours or 120 minutes.
Answered by
1
Step-by-step explanation:
2 hours or 120 minutes
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