A person sells and installs A; B; and C. The table shows, for example, that it takes 3 hours to sell a unit of B, it takes 4 hours to install it, and net profit per unit is $ 40. Product No.of Units Selling Hours per unit Installation Hours per unit Profit per unit A B C x y z 1 3 2 1 4 1 $10 40 10 During a 38-hour week, the person allots no more than 18 hours to selling and no more than 20 hours to installation. Find the combination of number of units of A; B; C that would yield maximum profit

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A person sells and installs A; B; and C. The table shows, for example, that it takes 3 hours to sell a unit of B,
it takes 4 hours to install it, and net profit per unit is $ 40.
Product No.of Units Selling Hours per unit Installation Hours per unit Profit per unit

A
B
C
x
y
z
1
3
2
1
4
1
$10
40
10

During a 38-hour week, the person allots no more than 18 hours to selling and no more than 20 hours to installation.
Find the combination of number of units of A; B; C that would yield maximum profit

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