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A carpenter makes bookcases in two sizes, large and small.
let a = no. of large bookcases
Let b = no. of small
It takes 6 hours to make a large bookcase and 2 hours to make a small bookcase.
"The carpenter can only spend 24 hours per week making bookcases"
6a + 2b =< 24
The profit on a large bookcase is $50 and the profit on a small bookcase is $20.
p = 50a + 20b
must make at least two of each size per week.
a => 2
b => 2