Question

a boat goes downstream and covers the distance between two ports in 5hours while it covers the same distance upstream in 5_1 by 2 hours find the stream of the boat in still water if the speed of the stream1_1 by2km/h
​

Answer 1

Answer:

According to question,

In downstream,

x=(S+2)x4 ........(1) as, (Distance= Speed x Time)

Similarly,

In upstream,

x=(S−2)x5 ........(2)

From (1) & (2),

(S+2)4=(S−2)5

=> 4S+8=5S−10

=> S=18 km/hr.