Answer:
The total interest amount is $161.928 approximately.
The monthly payment is $8122 approximately.
Explanation:
Consider the provided information.
the monthly payment of a $1300 loan for 18 months at 8.3%.
Thus the loan amount is $1300 with No.of monthly installments is 18 and the interest rate per month is 8.3%/12 = 0.00692
Total Interest amount = Loan amount × Interest rate per month × No.of monthly installments
Total Interest amount = 1300 × 0.00692 × 18
= $161.928
Monthly Payment = (Loan principal + Total Interest ) / No.of monthly installments
Monthly Payment = (1300 + 161.928)/18
= $81.22