
Solve the Simple Interest Problems: 1. How much interest does a $841 investment earn at 10% over five years? 2. How much interest does a $546 investment earn at 7% over one year? 3. What is the interest rate if a principal of $388 earns $23.28 in interest in one year? 4. You invested $381 and received $563.88 after six years. What was the interest rate? 5. At what rate was an investment made that obtains $107.52 on $512 over three years? 6. The ending balance on an investment is $807.84. If the principal was invested at 8% for four years, what was the principal? 7. If you received $9.63 on $107 invested at a rate of 9%, for how long did you invest the principal? 8. You put $197 into a savings account with an interest rate of 5% which earns $49.25 over a period of time. How long was the period of me? 9. If you invest $461 at an interest rate of 3%, how much money will you have after eight years? 
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