I need help; I don't understand how to analyze a story problem for inequalities to use for linear programming

Question

anonymous · Answer

An example:
A store has two types of animal feed available. Type A contains  pounds of oats and  pound of corn per bag. Type B contains  pounds of oats and  pounds of corn per bag. A farmer wants to combine the two types so that the resulting mixture has at least  pounds of oats and at least  pounds of corn. The store only has  bags of type A feed and  bags of type B feed in stock. Type A costs  per bag, and type B costs  per bag. How many bags of each type should the farmer buy to minimize her cost?

anonymous · Answer

I don't need the answer, I have that, I just don't understand how to get there.

phi · Answer

It is difficult to discuss this problem without putting in some numbers.  Here is a write-up.  The best thing you can do, is study lots of examples of setting up the equations. The more the better...

anonymous · Answer

Thank you very much for spending your time to help me, I appreciate it! That helped me a LOT.