If books bought at prices ranging from Rs. 200 to Rs. 350 are sold at prices ranging from Rs. 300 to Rs. 425. What is the greatest possible profit that might be made in selling 8 books?

A. Rs. 400
B. Rs. 600
C. Cannot be determined
D. None of these
Explanation:
Profit is maximum when C.P is minimum and S.P Maximum.
Thus, C.P = Rs. (200 × 8) = Rs. 1600
S.P = Rs. (425 × 8) = Rs. 3400
Gain = Rs. 1800