They should make 19 of Combo A and 10 of Combo B which would earn them $703.75 in revenue.
Let x represent the number of combo A and y represent the number of combo B. Hence:
10x + 20y ≤ 400 (1)
Also:
16x + 8y ≤ 384 (2)
The solution to the inequality is (19, 10)
Revenue = 21.25(19) + 30(10) = $703.75
They should make 19 of Combo A and 10 of Combo B which would earn them $703.75 in revenue.
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