evan has a problem. as part of his job, he is responsible for stocking and monitoring the inventory of chewing gum at a number of convenience and grocery stores. the gum is sold in individual packs for $1.19 per pack, and in 10 pack bags for $7.50. unfortunately, he has lost his paperwork for one of the stores. he doesnt know how many packs of gun were sold individually and how many packs of gum were sold as part of a 10 oack. if he cant work backwards to find the answer, he'll be in big trouble with his boss. lets see if we can help, and show how much we've learned about systems of equations

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