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Asked by Sylvia

A speed boat travels at a rate of 20 km per hour in still water. It travels 55 km upstream the same time it travels 90 km downstream. What is the rate of current?
10 years ago

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Answered by Steve
since time = distance/speed,

55/(20-x) = 90/(20+x)
10 years ago
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A speed boat travels at a rate of 20 km per hour in still water. It travels 55 km upstream the same time it travels 90 km downstream. What is the rate of current?

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