Question

The speed of a boat in still water is 8 kms/hr. If the boat can go 15 kms in down stream and 22kms in upstream in 5 hours, then let us write by calculating, the speed of the stream.
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Answer 1

Answer:

hey

Step-by-step explanation:

let the speed of boat in still water be x and speed of strem be y

so acc to 1st condn

8/x -15/x = 5

and upstream

22/y + 15/y= 5

let 1/x = m and 1/y =n

put value

8m-15n= 5 >>>1]

22m+15n=5 >>>2]

eliminate -15 and + 15

and solve i made your work easy

if you like mark as brain list thanks