A farmer buys a used tractor for Rs. 12,000. He pays Rs. 6,000 cash and agrees to pay the balance in annual installments of Rs. 500 plus 12% interest on the unpaid amount. How much will the tractor cost him?

Question

$\begin{array}{1 1}17680 \\ 16180 \\ 17180 \\ 16680 \end{array} $