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Test-Lidia
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<p>Find the speed of a motorboat, water in rest, and the rate of flow of the river, knowing it takes #a hours to covering a distance of #b km upstream and #c to travel #d downstream.</p><p><br /></p><p>What is the speed of the motorboat?</p><p>{1:SA:=#vm} </p><p>What is the speed of the stream?</p><p>{1:SA:=#vr} </p><p>Note: Express the result as a fraction.</p>
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Thursday, 10 December 2015, 10:53 AM
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