Answer with Explanation:
Let the man's rate upstream be x Kmph and that downstream be y Kmph.
Then,
Distance covered Upstream in 8 hrs 48 min =
Distance covered Downstream in 4 hrs.
=> (x x 8 4/5) = (y x 4)
=> 44/5 x =4y
=> y = 11/5 x.
Therefore,
Required ratio = ( y + x/2) : ( y - x/2)
=> (16x/5 x 1/2) : (6x/5 x 1/2)
=> 8/5 : 3/5
= 8 : 3.
Let the man's rate upstream be x Kmph and that downstream be y Kmph.
Then,
Distance covered Upstream in 8 hrs 48 min =
Distance covered Downstream in 4 hrs.
=> (x x 8 4/5) = (y x 4)
=> 44/5 x =4y
=> y = 11/5 x.
Therefore,
Required ratio = ( y + x/2) : ( y - x/2)
=> (16x/5 x 1/2) : (6x/5 x 1/2)
=> 8/5 : 3/5
= 8 : 3.