Last year Edward had $3,500 to invest in two savings accounts. One account earns 5% simple annual interest, and the other account earns 7% simple annual interest. At the end of the year, Edward had earned a total of $215 in interest from the two savings accounts.
Part A Write a system of two equations that could be used to find the amount of money invested in each account. Let x represent the amount invested at 5%, and let y represent the amount invested at 7%.
Part B Solve the system of equations. How much did Edward have invested at each rate?

Question

Last year Edward had $3,500 to invest in two savings accounts. One account earns 5% simple annual interest, and the other account earns 7% simple annual interest. At the end of the year, Edward had earned a total of $215 in interest from the two savings accounts.
Part A  Write a system of two equations that could be used to find the amount of money invested in each account. Let x represent the amount invested at 5%, and let y represent the amount invested at 7%.
Part B  Solve the system of equations. How much did Edward have invested at each rate?