A race-boat covers a distance of 60 km downstream in one and a half hour.it
covers this distance upstream in 2 hours. The speed of the race-boat in still water is 35 km/hr. Find the speed of the stream.
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Let speed of stream= x kmph
Speed upstream= (35+x) kmph
time = 2hours
distance = 2×(35-x) = 70-2x km
According to question
distance= 60km
70-2x = 60
2x = 70 - 60
x = 10/2
x = 5 kmph
Speed of stream is 5 km/h.
Speed upstream= (35+x) kmph
time = 2hours
distance = 2×(35-x) = 70-2x km
According to question
distance= 60km
70-2x = 60
2x = 70 - 60
x = 10/2
x = 5 kmph
Speed of stream is 5 km/h.
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