Answer:
$13,080.50 + $13,080.50 x 0.06 x 30/360 = $13,393.03
Explanation:
Adjusted balance after the first payment: $39,600 + $39,600 x 0.06 x 75/360 - $11,880 = $28,770
Adjusted balance after the second payment: $28,770 + $28,770 x 0.06 x 5/360 - $15,840 = $13,080.50 tell me if it's not clear