1. A friend lends you 2,500 euros for two years. You agree to return 2680 euros at the end of the term. Write down the formula, explanation and calculations of what the loan interest was. (3 points) You can decipher the formula simple SI = /PXRXT - - egn(@ ) percentage formula 100 P = 2500 T = 2 years S= k ( 1 + ni) SI= 2680- 2500 = 180 S=the amount to be (given) together with interest SI= 180euros k=the amount of credit issued at the Substitute in egn(i ) beginning n=credit duration 180= 2500 X RX 2. 100 i=interest rate decimal number 180 - 50 R 50 50 R = 3. 6 % The Loan Interest is compuled by subtracting the prinerpal. from the amount paid at the end of the & years. Ce 2680 - 2500 = 180 euras