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Atul is sitting on a boat which goes 30 ...

Atul is sitting on a boat which goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours, he can go 40 km upstream and 55 km down - stream.
(i) From the linear equation
(ii) Determine the speed of the stream and that of the boat in still water.
(iii) Which mathematical concept is used in the above problem.

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The correct Answer is:
x = 8, y = 3
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