A man can go upstream at 8 km h and downstream at 13 km h The speed of the stream

let speed of man=x
let speed of stream=y
so, x-y=8
x+y=13
solving we get y=2.5 kmph
10 years agoHelpfull: Yes(16) No(0)

downstream(a)=13km/hr,upstream(b)=8km/hr
speed of the stream is 1/2(a-b)=1/2(13-8)=1/2(5)=2.5km/hr
10 years agoHelpfull: Yes(4) No(1)
Speed of stream=1/2(13-8)
=5/2
=2.5
10 years agoHelpfull: Yes(1) No(0)
1/2(13-8)=2.5
10 years agoHelpfull: Yes(0) No(0)
speed of stream=1/2(d/w stream speed- upstream speed)
ans: =1/2(13-5)
=1/2(5)
=2.5 kmph
10 years agoHelpfull: Yes(0) No(0)
speed of stream=(d-u)/2
d=speeed of downstream
u=speed of upstream

(13-8)/2=2.5km/hr
10 years agoHelpfull: Yes(0) No(1)
u+v=13
u-v=8
by solving we get v=2.5
u is speed of boat , v is speed of stream
4 years agoHelpfull: Yes(0) No(0)

A man can go upstream at 8 km/h and downstream at 13 km/h. The speed of the stream is .
a) 2.5kmph
b) 4.2kmph
c) 5kmph
d) 10.5kmph