​Ajax Sound Is in the Business of Fabricating Printer Connection

Essay

​Ajax Sound is in the business of fabricating printer connection cables. They purchase 30 foot spools of wire from National Electric at $3.00 per spool and cut the wire into various lengths.
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​Each length of wire is fitted with printer connector jacks at both ends and then packaged. The printer connector jacks cost $.40 per pair (one pair is used in each cable package). Packaging and labor together cost $.20 per package.
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Because of Ajax's superior marketing skills they are in the enviable position of being able to sell all the printer connection cables they produce. They are currently contemplating offering four different sized cable packages:
​ If unused wire from a spool can be sold for scrap at $.03 per foot, how many packages of each size cable should Ajax make from a 30-foot spool?