If the plan gives a 960 yuan divided by 16 yuan/day = 60 days 60 days * 80 yuan/day = 4,800 yuan+engineer 5 yuan/day * 60 days = the total price of 300 yuan is 5 100 yuan.

If the plan gives B 960 pieces divided by 24 pieces/day = 40 days * 120 yuan/day = 4,800 yuan+engineer 5 yuan/day * 40 days = the total price of 200 yuan is 5,000 yuan.

If the plan gives Party A and Party B 960 cooperations divided by (16 +24) = 24 days * (80+120) = 4,800 yuan+engineer 5 yuan/day * 24 days = 120 yuan, the total price is 4,920 yuan.

Therefore, this scheme is cost-effective for the cooperation between Party A and Party B, and it takes less time and money. I hope I can help you.