SOLUTION: The Acme Class Ring Company designs and sells two types of rings: the VIP and the SST. They can produce up to 24 rings each day using up to 60 total man-hours of labor. It takes

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Question 79587: The Acme Class Ring Company designs and sells two types of rings: the VIP and the SST. They can produce up to 24 rings each day using up to 60 total man-hours of labor. It takes 3 man-hours to make one VIP ring and 2 man-hours to make one SST ring. How many of each type of ring should be made daily to maximize the company's profit, if the profit on a VIP ring is $40 and on an SST ring is $35?
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The Acme Class Ring Company designs and sells two types of rings: the VIP and the SST. They can produce up to 24 rings each day using up to 60 total man-hours of labor. It takes 3 man-hours to make one VIP ring and 2 man-hours to make one SST ring. How many of each type of ring should be made daily to maximize the company's profit, if the profit on a VIP ring is $40 and on an SST ring is $35?
:
Let x = number of VIP rings: let y = number of SST rings
:
The total production inequality;
x + y =< 24
y = 24 - x; arranged to plot graph (purple)
:
The labor inequality;
3x + 2y =< 60
2y = 60 - 3x
y = 60/2 - (3/2)x
y = 30 - 1.5x; arranged to plot the graph (red)
:
The graph:
+graph%28+300%2C+200%2C+-10%2C+25%2C+-10%2C+30%2C+24-x%2C+30-1.5x%29+
:
The 3 corners of the area of feasibility (at or below the lines whichever is lower):
:
..x/y;.....profit on each type;... total profit
0,24; 40(0) + 35(24) = 0 + 840 = $840
12,12; 40(12) + 35(12) = 480 + 420 = $900
20,0; 40(20) + 35(0) = 800 + 35(0) = $800
:
obviously 12 of each type would give max profit


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