Correct Answer: Option D
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 hTk.
=> x × 8(4/5) = (y×4)
=> (44/5)x = 4y
=> y = (11/5)x
so, Required ratio = (y+x)/2 : (y-x)/2
= {(16x/5)×(1/2)} :{ (6x/5)×(1/2)}
= 8/5 : 3/5
= 8:3
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