SOLUTION: Erica invested a total of $5,000, part at 3% simple interest and part at 4% simple interest. At the end of 1 year, the investment had earned $176 interest. How much was invested

SOLUTION: Erica invested a total of $5,000, part at 3% simple interest and part at 4% simple interest. At the end of 1 year, the investment had earned $176 interest. How much was invested

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Question 345876: Erica invested a total of $5,000, part at 3% simple interest and part at 4% simple interest. At the end of 1 year, the investment had earned $176 interest. How much was invested at each rate?
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
0.03x+0.04(5000-x)=176
0.03x+200-0.04x=176
-0.01x=-24
x=2400 at 3%
5000-2400=2600 at 4%
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