It takes a boat 3 times to travel upstream against a river current than the time it takes to travel downstream. If the speed of the boat is 40 mph, what is the speed of the current? a. 10 mph       c. 20 mph b. 30 mph       d. 40 mph

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Chapter2: Motion
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Problem 5MC: Acceleration may result from what? (2.3) (a) an increase in speed (b) a decrease in speed (c) a...
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It takes a boat 3 times to travel upstream against a river current than the time it takes to travel downstream. If
the speed of the boat is 40 mph, what is the speed of the current?
a. 10 mph       c. 20 mph
b. 30 mph       d. 40 mph

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