Question

the speed of boat in still water is 13 kilometre per hour if the boat travels 84.7 kilometre downstream in 5.5 hours find the speed of stream

Answer 1

Answer:

3 KM/h

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

Answer 2

Answer:

answer is 640 km ok please mark me as brainliest