Investment problems such as those in Exercises 75–80 can be solved by using a method similar to the one explained in Example 2, along with the simple-interest formula I = PRT.Solve each problem. Let T = 1year for each exercise.
Buying and Selling Land Ms. Gay Aguillard bought two plots of land for a total of $120,000. When she sold the first plot, she made a profit of 15%. When she sold the second, she lost 10%. Her total profit was $5500. How much did she pay for each piece of land?
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