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A storeowner sells peanuts and cashew nuts at $3 per pound and $5 per pound respectively.
She then thinks of a new idea of promoting her sales: to create a mixed-nut TV snack. To try
the idea, she decides to make 120 pounds of the blend and sell it for $4 per pound. The store
owner wants to know how much of each nut she should use in the blend so that she makes the
same profit as when selling the nuts separately.
The problem can be modelled in a system of linear …
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