Asked by Anonymous
Troy and Lisa were shopping for school supplies. Each purcahsed different quantities of the same notebook and thumb drive. Troy bought five notebooks and four thumb drives for $83. Lisa bought six notebooks and six thumb drives for $120. Find the cost of each notebook and each thumb drive.
Answers
Answered by
Scott
5n + 4t = 83
6n + 6t = 120 ... n + t = 20 ... 4n + 4t = 80
subtracting equations ... n = 3
substitute back to find t
6n + 6t = 120 ... n + t = 20 ... 4n + 4t = 80
subtracting equations ... n = 3
substitute back to find t
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