Answer:

Step-by-step explanation:
Let
- x the amount of type A produced;
- y the amount of type B produced;
- z the amount of type C produced.
<u>Cleaning</u> requires 4 minutes for type A, 6 minutes for type B and 8 minutes for type C. In total, 3.5 hours, then

<u>Cutting</u> requires 2 minutes for type A, 4 minutes for type B and 2 minutes for type C. In total, 2.5 hours, then

<u>Packaging</u> requires 2 minutes for type A, 2 minutes for type B and 4 minutes for type C. In total, 1.5 hours, then

Note that

Hence, we have 6 inequalities:
