b) Build the model in Excel (same format as for the P&Q problem) and find through Solver the optimal mix of products that should be produced on the two machines to minimize the cost of meeting this month's requirements. It's OK to have decimal solutions. Let Excel display only one decimal for the optimal solution. c) For machines maintenance reasons, at least half of the product 1 requirement must be produced on machine 1, and at least half of the product 2 requirement must be produced on machine 2. How does the solution change as opposed to point b)? Again, it's OK to have decimal solutions. Let Excel display only one decimal for the optimal solution