10. A machine requires three hours to make a unit of Product A and five hours to make a unit of Product B. The machine operated for 395 hours, producing a total of 95 units. How many units of Product B were produced? 11. You invested a sum of money in a bank certificate yielding an annual return of one-twelfth of the sum invested. A second sum of money invested in a credit union certificate yields an annual return of one-ninth of the sum invested. The credit union investment is $500 more than two-thirds of the bank investment, and the total annual return is $1000. What is the sum of money you invested in the credit union certificate