Solve the problem.
-A boat traveled for $3 \mathrm{hr}$ with a 3- $\mathrm{mph}$ current to reach a picnic area. The return trip against the same current took $6 \mathrm{hr}$. Find the speed of the boat in still water.
A) $36 \mathrm{mph}$
B) $21 \mathrm{mph}$
C) $12 \mathrm{mph}$
D) $9 \mathrm{mph}$

Question

Quizplus · Accepted Answer

The speed of the boat in still water can be found by setting up equations based on the distance traveled with and against the current. Let $x$ be the speed of the boat in still water. The distance covered in both directions is the same, so we have $3(x + 3) = 6(x - 3)$. Solving this equation for $x$ gives $x = 9$ mph.

Solve the Problem 3hr3 \mathrm{hr}3hr With a 3- mph\mathrm{mph}mph Current to Reach a Picnic Area

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