To help his sister, Lydia, pay for college, Jason offered her a loan at a simple annual interest rate of 2%. At the end of 4 years, Lydia paid off the loan, and Jason received $80 in interest. How much money did Jason loan his sister?
(loan*2%*4)/100=80 loan = 80*100*8 =1000 double check : interest per year :(1000/100) *2 =20 total interest for 4 years = 20*4=80 Just remember this formula: Interest = (loan*rate*time(in years)) /100