Domain: commerce (Value Optimization and Discounts)
Problem: I am shopping for my three nephews with a total budget of S$1,000 and want to buy LEGO sets from this Black Friday catalog. I can purchase a maximum of three units for any single item. My objective is to maximize the total piece count across all gifts to ensure the longest play time for the children. Given this goal and my budget constraints, what is the total amount of money saved by utilizing the Black Friday discounts compared to the original prices?
Answer: (469.90 - 300.55) * 2 + (43.90 - 34.00) * 1 + (79.90 - 56.90) * 2 + (124.90-83.30) * 3 = 519.4