The maximum possible profit = maximum possible difference in SP and CP. It means SP be maximum and CP be minimum CP(min) = ₹ 399 19 m = 399 where m is an integer. Again SP(max) = ₹ 697, which is very close to 699 Here 697 = 17 k; k is a positive integer. So, the maximum profit = 697 − 399 = ₹ 298