Question

a streamer goes downstream in 9hours and cover the same distance upstream in 10 hours. if the speed of the stream is 3km/hours find the speed of the streamer and the distance between two ports​

Answer 1

Answer:

Let the speed of the steamer is xkm/h and distance is d

Then, speed of steamer downstream (u) = x+3

Speed of steamer upstream (v) = x-3

Distance covered by steamer upstream

(d) =10(x−1) ......(1)

Distance covered by steamer downstream (d)=9(x+1) ......(2)

From equation (1) and (2),

10(x−1)=9(x+1)

10x−10=9x+9

10x−9x=9+10

x=19 km/h

Substituting this value in equation(1),

Distance(d)=10(19−1)=180km

Step-by-step explanation:

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