Solution: ?In each of the following exercises, set up an equation or inequality and
Chapter 4, Problem 18(choose chapter or problem)
In each of the following exercises, set up an equation or inequality and solve the problem. Be sure to indicate clearly what quantity your variable represents. Round to the nearest tenth where necessary.
A total of $7500 was invested as follows: a certain amount at 7%, twice that amount at 10%, and the remainder at 12%. If the annual interest from the three investments was $738, how much was invested at each rate?
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