A motorboat whose speed in still water is 18km/h takes 1 hour more to go 24 km/h upstream then to return downstream to the same spot.find the speed of the stream. Plz answer it quickly urgent
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ooops... really sorry!! wrong question. but you may use this model as its a thats sum similar to yours
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Let the speed of stream be x km / hr
For upstream = ( 18 - x ) km / hr
For downstream = ( 18 + x ) km / hr
A.T.Q.
24 / 18 - x - 24 / 18 + x = 1
48 x = 324 - x²
x² + 48 x - 324 = 0
( x + 54 ) ( x - 6 ) = 0
x = - 54 or x = 6
Since speed can't be negative .
Therefore , speed of the stream is 6 km / hr .
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