## anonymous 4 years ago A small boat travels 12mph in still water. It takes 4hrs longer to travel 45 miles going upstream than downstream. Find the rate of the current. (Hint: 12+x= rate going down; 12-x= rate going up) round answer to nearest tenth. *I know you have to use the quadratic formula at some point but thats about it.

1. anonymous
2. Hero

Teacher sounds like someone who gives students partial answers on the test

3. anonymous

t=d/r The difference between the time up and the time down is 4 hours. Solve the following for c, the speed of the current: $\frac{45}{12-c}-\frac{45}{12+c}= 4$

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