A chocolate cost Rs 10. Sheela buys 40 chocolates. She gives 3 to Ajay, 7 to Sanjay and 9 to Priya. What is the cost of the remaining chocolates she has

Question

$\begin{array}{11} (a)\;Rs\; 200 \\ (b)\; Rs\; 190 \\ (c)\; Rs\; 210 \\ (d)\; Rs\; 170 \end{array}$