Question

boat running upstream takes 6hour 18 minutes to cover a certain distance, while it takes 4 hours

to cover the same distance in running downstream. What is the ratio between the speed of the boat

and the speed of stream​

Answer 1

Answer:

103 : 46

Step-by-step explanation:

Let the man's rate upstream be x kmph and that downstream be y kmph.

Then, distance covered upstream in 6 hrs 18 min = Distance covered downstream in 4 hrs.

⇒ x * $6\frac{3}{10}$ = y * 4

⇒$\frac{63x}{10}$ = 4y

⇒ $y = \frac{63x}{40}$

Required ratio = $\frac{(x + y)}{2}$ : $\frac{( y - x)}{2}$

= $\frac{103x}{80}$ : $\frac{23x}{40}$

= 130 : 46