MA 153 Lesson 8 Outline Answering of homework questions over lesson 7. Lesson 8 Section 2.2 ApplicationsExample: Kathy invested $50,000 into two different accounts. One account earns 7% simple interest and the other pays 5% simple interest. How much is invested in each account if the total interest for one year was $3250?
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Example: (Mixing chemicals) A chemist is to prepare 90 liters of a 42% brine solution. He only has a 30% brine solution and a 57% brine solution available. How much of each type of solution should be used to end up with 90 liters of a 42% solution?