Find the simple interest rate p.a. on a $1,500 loan with $1,125 charged interest over 3 years.

What is the Principal investment amount if after 8 years, the investment total is $3410 and has a 3% simple interest rate.

Find the interest rate on a $895 investment with $716 earned in total simple interest over 5 years.

Caiden earned $475 from mowing lawns last summer. He deposited this money in an account that pays an interest rate of 3.8% p.a. compounded annually. What will be his balance after 15 years?

Emily’s parents put $1,500 in her bank account for college tuition when she was born. At an interest rate of 8.25% compounded annually, what will be the balance after 18 years?

The Henley's took out a loan for $195 000 to purchase a home. At a 4.3% p.a interest rate compounded annually, how much interest will they have paid after 30 years?

Riley received $2 663.90 in savings bonds. If the bonds earn 6.75% p.a. interest compounded annually, how much was originally invested 15 years ago?

Shawn is buying a new Jet Ski for $12,500. He is considering two credit options. Option A offers a 6 year loan with 8.5% p.a. interest compounded annually, while Option B offers a 5 year loan with 10% simple interest compounded annually. How much more interest will be charged for option A over option B?

An investment account has $2 313.06 in it after Shelly invested $1 000 six years ago. What compound interest rate per annum did the investment account have?