Question

A man can route upstrwam at 8kmph and downstream at 13kmphr the speed of the stream is

Answer 1

let speed of boat be y km/he

let speed of stream be x km/hr

BTP,

Y+X=13.....(1)

Y-X=8......(2)

adding equations 1 and 2 we get,

2y=21

y=10.5

substituting value of y in equation 1,

10.5+ X= 13

X=2.5

Therefore, speed of stream is 2.5 kmph.