a mother earned $15000.00 from royalties on her cookbook. She set aside 20% of this for a down payment for a new home. The balance will be used for her son's future education. She invested a portion of the money in a bank certificate of a deposit (cd account) that earns 4% and the remainder in a savings bond that earns 7%. IF the total interest earned after one year is $720.00, how much money was invested at each rate?

(a) Heather borrowed $5000 from her grandmother as a down payment on her first car. She promised to repay the debt in 2 years at 7% per annum, simple interest. How much should Heather repay her grandmother? (b) How much must Jason deposit in a special account paying interest at the rate of 9.5% to receive $75.21 in interest after 6 months? (c) An investment of $4500 gained $337.50 in intesest in 9 months. What rate of yearly intesest did the investment pay?

Starting on the day Kelly was born, her mother has invested $50 at the beginning of every month in a savings account that earns 2.20% compounded monthly. a. How much did Kelly have in this account on her 22nd birthday? Assume that there was no deposit on that day.   b. What was her mother's total investment?   c. How much interest did the investment earn?   How much should Diana's dad invest into a savings account today, to be able to pay for Diana's rent for the next five years if rent is $950 payable at the beginning of each month? The savings account earns 3.75% compounded monthly.

While Kate was a student at SA University, she borrowed $16,000 in student loan at an annual interest rate of 10%. If she repays $3,000 per year, calculate the period required (to the nearest year) to pay off her debt

At the time of her grandson's birth, a grandmother deposits $12,000 in an account that pays 3.5% compounded monthly. What will be the value of the account at the child's twenty-first birthday, assuming that no other deposits or withdrawals are made during this period? The value of the account will be $ (Round to the nearest dollar as needed.)

At the time of her grandson's birth, a grandmother deposits $4000 in an account that pays 4.5% compounded monthly. What will be the value of the account at the child's twenty-first birthday, assuming that no other deposits or withdrawals are made during this period? The value of the account will be $ (Round to the nearest dollar as needed.)

Shelly deposits the $2000 she got as a birthday gift from her grandmother into an account earning 3.6% interest compounded monthly. She decides to also deposit $200 at the end of each month into the same account. How much will be in the account in 10 years?

When Gerardo was born, his grandparents started a savings account for him with a beginning balance of 1,250 Peruvian Sols. Every month they deposited 160 Sols into the account. The savings account paid an annual interest rate of 2.1%, compounded monthly. Gerardo just turned 24 and the balance of his account is now $61,917.43. How much of the money in Gerardo's account was earned in interest? (Round your answer to two decimal places, and don't include a currency sign.)

New parents wish to save for thier newborn's education and wish to have $36,000 at the end of 18 years.  How much should the parents place at the end of each year into a savings account that earns an annual rate of 5.6% compounded annually? (round your answer to two decimal places).   How much interst would they earn over the life of the account? Determine the value of the fund after 12 years.

Luoxana contributed $5,000.00 every year into an RRSP for 18 years. "What nominal annual rate of interest will the RRSP earn if the balance in Luoxana's account just after she made her last contribution was $195,000.00?