Question 1150162
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The ratio of the distances is 240:160 = 3:2, and the times are the same.  So the ratio of the speeds is 3:2.<br>
Let x be the speed of the boat in still water.  If the speed of the current is 5mph, then the upstream speed is x-5 and the downstream speed is x+5.  So<br>
{{{(x+5)/(x-5) = 3/2}}}
{{{3x-15 = 2x+10}}}
{{{x = 25}}}<br>
ANSWER: The speed of the boat in still water is 25mph.<br>