Question

A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water current respectively?

Answer 1

Answer:

8 : 3

Step-by-step 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.

so

( X x 44/5) = Y x 4

= 44X / 5 = 4Y

thus Y = 11X/5

so required ratio we have = (Y + X)/2 : (Y - X)/2

16X/5 x 1/2 : 6X/5 x 1/2

= 8/5 : 3/5

so we have ans that is 8 : 3

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