| When the production of A type of device 38 units, B type of device 42 units to obtain the maximum profit |
| Solve: (1) set the company to produce A type of medical equipment units, then the production of B type of medical equipment ( ) units, according to the meaning of the question to get Solved , < Take the integer and get ? ∴ The company has three production programs: Program 1: production of 38 units of type A devices and 42 units of type B devices. Option 2: Produce 39 units of type A instruments and 41 units of type B instruments. Option 3: Production of 40 units of A devices and 40 units of B devices. The company makes a profit: There is a maximum value when. ∴Maximum profit is obtained when 38 instruments of type A and 42 instruments of type B are produced. Set the company to produce A kind of medical equipment units, the production of B kind of medical equipment ( ) units, according to the capital of not less than 18 million yuan, the column inequality group to solve |