Question

a streamer goes downstream and covers the distance downstream and upstream between two ports in 6 hours and 8 hour respectively. of the speed of the stream is 4km/h,find the speed of the streamer in still water​

Answer 1

A streamer goes downstream from one port to another in 4 hours.It covers the same distance upstream in 5 hours.If the speed of stream is 2 km/h, the distance between the two ports is

ANSWER

Let speed of the streamer in still water= x km/hr

Speed of downstream =(x+2)km/hr

Distance between the ports =4(x+2)km.... (i)

Speed of upstream =(x-2)km/hr

Distance between the ports =5(x−2)km....(ii)

from Equation (i) and (ii)

4(x+2)=5(x−2)

4x+8=5x−10

x=18

∴ Distance between two ports =4(x+2)

=4(18+2)km=80 km

it's the same kind of question