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Topic:  solving equations using word problems 
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Subject:  Solving upstreamdownstream problem 
Author:  Veronika Szinai 
Date:  Nov 17 2003 
river.
The boat travels upstream against the river by the rate of bm,
downstream with the river by the rate of b+m.
We are going to use the distance formula to set up an equation system for the
two variables b and m.
The boat travels 48 miles both direction.
d=rt
48=(d+m)4
48=(dm)3
Use the distribute property for both equations.
Eliminate the variable d, because the qustion is the rate of the Missisipi
River.
If you have any more questins , let me know.
 
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