Question

You are going to invest $20,000 part at 12% and part at 16%. What is the most that can be invested at 12% in order to make at least $3000 interest per year? (please show work)

Answer 1

help

Answer 2

Let x be the amount invested at 12%. Write an expression (in x) for how much is invested at 16%. Then use those two expression to write an expression for how much interest you will make. If you are still stuck, post where you are stuck.