Question

The speed of a boat in still water is 8km/hr. It can go 15 km upstream and 22 km downstream in 5 hours. Find the speed of the stream.

Answer 1

Answer:

Step-by-step explanation:

let X be the speed of the stream

speed of the boat in still water = to 8 km /hr

thus the speed of the boat in upstream =(8-x) km/hr

speed of the boat in downstream =(8+x )km/hr

the time taken by boat to cover 15 km

the time taken by boat to cover 22 km

total time =5hrs (given)

x=3

since speed cannot be negative

Therefore speed of steam is 3km/hr

Hope it helps to you