A boat speeds 1 and a half hours down the stream and 2 and a half hours up the stream of 30 km. What is the speed of the water current in kmph?
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Answered by
3
Answer:
hii
your answer is here !
Step-by-step explanation:
=> Speed upstream= 30 * (2/5) (Distance/Time) =12 kmph
=> Speed downstream= 30* (2/3) = 20 kmph
=>Speed of water current= 1/2* (Downstream speed- Upstream Speed)
Speed of water current= 1/2* (Downstream speed- Upstream Speed)=> (1/2) * (20 - 12) = 4 kmph
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Answered by
53
Answer:
HeY!❤️
Upstream speed = s - r = 30/2.50 = 12 kmph
Downstream speed = s + r = 30/1.50 = 20 kmph
Speed of boat = (US + DS)/2 = 16 kmph
Speed of water current = (DS - US)/2 = 4 kmph
Hope it will be helpful ✌️
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