A cook bought 5 kg potatoes and 10 kg tomatoes. If 1 kg of tomato cost Rs 25 and 1 kg of potato costs Rs 20. What is the total amount paid by the cook

Question

$\begin{array}{11} (a)\; Rs 350 \\ (b)\; Rs 250 \\ (c)\; Rs 100 \\ (d)\; Rs 200 \end{array}$