Some Helpful Tools
Lesson (A)
Solve the following problems. Type your answers in the spaces provided.
Lesson (B)
Set up a percent proportion to find the interest rate. Type your answers in the spaces provided.
Lesson (C)
Set up a percent proportion to find the principal investments. Type your answers in the spaces provided.
Find the total amount of a $1,500 loan borrowed at 9% for 2 years.
$
Randal borrowed $15,000 for 120 days at 14% to restock his office supply
store. Find the total amount to be repaid.
$
Find the interest earned on a $5,400 investment made at 12% for 5 years.
$
Vera plans to invest $10,000 in the stock market. If the interest rate is
14%, what will be the total amount of her return after 4 years?
$
What is the principal investment if 9% interest earned on Sam's investment is
$450. The principal invested is $
What is the principal invested if 12% interest earned on George's retirement plan
is $375. The principal invested is $
Find the principal investment if 15% interest earned on an investment is $1,500.
The principal invested is $
The Answer Key is found in the Some Helpful Tools section at the bottom of this page.
The interest paid on a $2,000 loan is $150. What percent is the interest rate?
The interest paid on a $1,500 loan is $120. What percent is the interest rate?
The interest paid on a $750 credit card balance is $145. What percent
is the interest rate? Hint: Round your answer to the nearest tenth.
The interest paid on a $12,000 credit card balance is $575. What percent
is the interest rate? Hint: Round your answer to the nearest tenth.
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Math: Interest Problems - Lessons
