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.
Cookbook Royalties Latasha Williams earned $48,000 from royalties on her cookbook. She paid a 28% income tax on these royalties. The balance was invested in two ways, some of it at 3.25% interest and some at 1.75%. The investments produced $904.80 interest per year. Find the amount invested at each rate.
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