5.1.1E: Exercises - Simple Interest
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Do the following simple interest problems.
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1) If an amount of $2,000 is borrowed at a simple interest rate of 10% for 3 years, how much is the interest? |
2) You borrow $4,500 for six months at a simple interest rate of 8%. How much is the interest? |
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3) John borrows $2400 for 3 years at 9% simple interest. How much will he owe at the end of 3 years? |
4) Jessica takes a loan of $800 for 4 months at 12% simple interest. How much does she owe at the end of the 4-month period? |
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5) If an amount of $2,160, which includes a 10% simple interest for 2 years, is paid back, how much was borrowed 2 years earlier? |
6) Jamie just paid off a loan of $2,544, the principal and simple interest. If he took out the loan six months ago at 12% simple interest, what was the amount borrowed? |
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7) Shanti charged $800 on her charge card and did not make a payment for six months. If there is a monthly charge of 1.5%, how much does she owe? |
8) A credit card company charges 18% interest on the unpaid balance. If you owed $2000 three months ago and have been delinquent since, how much do you owe? |
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9) An amount of $2000 is borrowed for 3 years. At the end of the three years, $2660 is paid back. What was the simple interest rate? |
10) Nancy borrowed $1,800 and paid back $1,920, four months later. What was the simple interest rate? |