Question 8 • 2025-2026 GSP Mathematical Reasoning for Decision Making
The monthly interest rate is 13.11% ÷ 12 = 0.010925, and six and a half years gives 78 monthly payments. Using the loan-payment formula, the monthly payment is about $850.64. The total paid is 78 × $850.64 = $66,349.92; subtracting the $44,500 principal gives $21,849.92 in interest, choice A.
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