Setting: one mask for x days
, (8-X) days
Equation: 0.6X+(8-X)=5.
X=7
Type B mask: 8-7= 1 day.
The factory can make a profit by producing type A masks: 6000 * 7 * 0.5 = 2 1 000 yuan.
The production of type B masks can be profitable:
8000 *(8-7)* 0.3 = 2400 yuan
What is the maximum profit?
2 1000+2400=23400 yuan
2. If you want to complete the task in the shortest time, how can you arrange to produce only a number of masks of type A and type B?
Type A mask: 1.8/0.6=3 days.
(5- 1.8)/0.8=4 days
What's the shortest time?
3+4=7 days