Math, asked by gowhersalma, 1 year ago

A motor boat whose speed is 18km/hr in still water takes 1hr more to go 24kn up stream. Then to return to the same spot. Find the speed of the string?


Guyzz help me plzz

Answers

Answered by Poorvaja06
3

6km per hr is the answer

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gowhersalma: Tq so much
Poorvaja06: no probs
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Answered by Anonymous
0

Answer:

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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