Algebra word problems
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1. Gone fishing. Debbie traveled by boat 5 miles upstream to fish in her favorite spot. Because of the 4-mph current, it took her 20 minutes longer to get there than to return. How fast will her boat go in still water?
t=d/r
x=rate of boat
2. Open-top box. Thomas is going to make an open-top box by cutting equal squares from the four corners of an
11 inch by 14 inch sheet of cardboard and folding up the sides. If the area of the base is to be 80 square inches, then what size square should be cut from each corner? Base area = (11 - 2x)(14 - 2x) = 80
3. Golden painting. An artist wants her painting to be in the shape of a golden rectangle. If the length of the painting is 36 inches, then what should be the width? See the previous exercise.
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