Rate * Time = Distance => Time = Distance/Rate
In this problem the time of travel is the same; therefore.
12/(7+c) = 8/(7-c) where c is the rate of the current
84-12c = 56+8c
You collect terms and solve the equation.
Marella S.
asked • 01/09/19Linear Word Problems- rate of current
A boat travels at the rate of 7mph in still water, travels 12 miles downstream in the same time it travels 8 miles upstream. What is the rate of the current?
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