I could use some help with linear programming on Excel. The goal here is to minimize production costs by finding the right combination of motors produced by the company and motors outsourced for production (use solver). Any help on how to work through this would be great.

Number of electric motors	Model 1	Model 2	Model 3
Make
Buy
Available
	>=	>=	>=
Needed (order)	2800	1900	1000
Costs
Make	$52	$84	$112
Buy	$61	$95	$125
Resources required				Used		Available
Armature wiring	1.5	1	2.5		<=	9500
Parts assembly	1	1.5	1		<=	4900
Total cost