Question

A person can row 6km upstream and 20km downstream in 3 hours. He can row 12km upstream and 30km downstream in 5 hours. Find the speed of the boat in still water and also the speed of the current.

Answer 1

Answer:

hyy hru?????

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ur answer

Step-by-step explanation:

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Answer 2

Answer:

Let, speed of Ritu in still water be x km/hr

and speed of current be y km/hr

Then speed downstream =(x+y) km/hr

speed upstream =(x−y) km/hr

we know, Time=SpeedDistance

Then x+y20=2 and x−y4=2

⇒x+y=10 ...(1)

&   x−y=2 ...(2)

adding both we get, 2x=12⇒x=6

Thus using (1) y=10−6=4

Hence the speed of Ritu in still water is 6 km/hr and the speed of the current is 4 km/hr.