Question

A race boat covers a distance of 60 km downstream in one and a half hour .It covers this distance upstream in 2 hours. The speed of the race boat in still water is 35km/hr. Find the speed of the stream.​

Answer 1

Answer:

5 km/hr

Step-by-step explanation:

total distance=60km

boats speed=35km/hr

let downstream water speed be x

formula is total time*total speed = total distance

1 1/2 hr * (35+X)=60

3/2*(35+X)=60

(35+X)=60*2/3

35+X=40

x=40-35

X=5

downstream water speed is 5km/hr

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