A boat takes 4 hr ulstream and two hours downstream for covering the same distance the ratio of velocity of boat to the water in the river is
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Answer:
Required ratio =3:1
Explanation:
Let speed of boat be x and speed of river be y and D be the distance covered.
As we know, distance/speed = time.
Thus,
D/(x+y) =2 {downstream}
D/(x-y) = 4 {upstream}
=> 2x + 2y = 4x - 4y
=> 4x - 2x = 2y + 4y
=> 2x = 6y
=> x/y = 3/1
Thus required ratio is 3:1.
Thank you
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