please EXPLAIN WHY THE ANSWER LIKE THAT

write the answer detail

that's all information i have. what variabel is unclear ???

years. If the principal in the last five payments. Intere 11. A loan is being repaid with installments of 1 at the end of each year for 20 years. Interest is at effective rate i for the first 10 years and effective rate j for the second 10 years. Find expressions for: a) The amount of interest paid in the 5th installment. 14) The amount of principal repaid in the 15th installment. 12. A borrower has a mortgage that calls for level annual payments of 1 at the end of each time of the seventh regular payment an additional payment is Step 1 (a) B da We have Bp = Qa;+ var so that Is = i. Be = ii da;+ v, moli Step 2 Step 1 (a) B? We have BX = da: + 4 so that 1s = 1 B. = ii da; + valor Step 2 (b) After 10 years, the loan becomes a standard loan at one interest rate. Thus applying formula (5.5) 20-15+1 Was this solution helpful? Bono years. If the principal in the last five payments. Intere 11. A loan is being repaid with installments of 1 at the end of each year for 20 years. Interest is at effective rate i for the first 10 years and effective rate j for the second 10 years. Find expressions for: a) The amount of interest paid in the 5th installment. 14) The amount of principal repaid in the 15th installment. 12. A borrower has a mortgage that calls for level annual payments of 1 at the end of each time of the seventh regular payment an additional payment is Step 1 (a) B da We have Bp = Qa;+ var so that Is = i. Be = ii da;+ v, moli Step 2 Step 1 (a) B? We have BX = da: + 4 so that 1s = 1 B. = ii da; + valor Step 2 (b) After 10 years, the loan becomes a standard loan at one interest rate. Thus applying formula (5.5) 20-15+1 Was this solution helpful? Bono