Raymond bought a car for $40,000. He took a 20,000 loan from a bank at an interest rate of 15% per year for a 3-year period. What is the total amount of (interest and loan) that he would have to pay the bank at the end of 3 years
Is the 15% interest "simple interest" or "compound interest"? That will make a big difference !!
The way you have it stated in your question, it sounds like "simple interest". If that is indeed the case, then:
[0.15 x 20,000 x 3] + 20,000 = $29,000 - total principal + interest paid to the bank after 3 years.