Simple Interest Word Problems Test

A certain amount is deposited in a savings account which pays 10% annual simple interest for the first year, 11% for the second, and 12% for the third. If at the end of the third year, a total of $22,440 was earned in simple interest, what was the original amount invested?

Rob purchases a car using a 7-year special loan package. The loan package allows him to pay only simple interest for the first two years of the loan, followed by five years of normally structured payments (principal and simple interest). Throughout the loan, he will pay a rate of 18% annual simple interest. If at the end of the interest-only period, the total payments were $6930, how much was the amount of the car loan?

Betty has $40,000 to invest. After meeting with a financial planner, she decides to invest some of the money in a savings account paying 4% annual simple interest and the remainder of the money in an annuity which pays 6% annual simple interest. If she wants to earn a total amount of $2040 from these two investments each year, how much should be invested at each rate?

Aria arranged a meeting with her local financial planner and decided she needs to earn a total of 5.5% annual simple interest between two investments. She decided to invest $15,000 in a savings account, which pays 6% annual simple interest. Additionally, she decided to invest in a government bond fund, which pays 4% annual simple interest. How much should she invest in the bond fund to achieve her investment goals?

Last year, Bob earned a total of $1440 in simple interest from two investments. He invested part of his money in bonds, which pay 3.5% annual simple interest, and $5000 more than 3 times this amount in private equity funds, which pay 4% annual simple interest. How much money did Bob invest in each?