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QUESTION 1 Zales Jewelers uses rubies and sapphires to produce two types of rings. One Type 1 ring requires 2 rubies, 3 sapphires and 1 hour of jeweler's labor. One Type 2 ring requires 3 rubies, 2 sapphires and 2 hours of jeweler's labor. Each Type 1 ring sells for $400; type 2 sells for $500. All rings produced by Zales can be sold. At present. Zales has 100 rubies, 120 sapphires, and 80 hours of jeweler's labor. Extra rubies can be purchased at a cost of $100 per ruby. To maximize profit, Zales should solve the following LP: max 400XL + 500x2 100R s.t. 2x + 3x2 RS 100 3X1 + 2x2 s 120 X1 + 2x2 S 80 X1, X2, R20 Here x1 = number of Type 1 rings produced, x2 number of Type 2 rings produced, and number of rubies purchased. Below are the What'sBest model and the solution report to this LP According to the What'sBest solution report below, the maximum profit is SI TO achieve the maximum profit, the company should purchase pieces of rubies to produce rings of Type 1 and rings of Type 2. D E B 2 Cost Coeficient 3 Decision variables 4 400 500 -100 x1 x2 R 20 30 5 30 D E 400 500 -100 x1 x2 R 20 30 30 B 2 Cost Coefficient 3 Decision variables 4 5 6 Objective 7 8 Constraints 9 Rubies 10 Sapphires 11 Labor hours SUMPRODUCT(C2:E2,04:14) =2C4+3 D4-E4 =3*C442D4 =C4+2*D4 =@WB(C9,"