= Homework: HW4 Question 2, Problem B.22 Part 8 of 9 HW Score: 77.32%, 77.32 of 100 points Points: 22.22 of 40 S Kalyan Singhal Corp. makes three products, and it has three machines available as resources as given in the following LP problem: Maximize contribution = 4X4 + 4X2 + 7X3 1X1 +7X2 + 4X3 80 (Cy: hours on machine 1) 2X1 + 1X2 + 7X3 84 (Cz: hours on machine 2) 8X, +4X2 + 1X3 s 80 (Cz: hours on machine 3) X1, X2, X320 a) Using a computer software for solving LP, the optimal solution achieved is: X1 = 6.26 (round your response to two decimal places). X2 = 5.12 (round your response to two decimal places). X3 = 9.48 (round your response to two decimal places). Contribution (objective value) = 111.86 (round your response to two decimal places). Machine has 0.00 of available at the optimal ion (round your response two mal places). Machine 2 has 0.00 hours of unused time available at the optimal solution (round your response to two decimal places). Machine 3 has 0.00 hours of unused time available at the optimal solution (round your response to two decimal places). c) An additional hour of time available for third machine, is worth dollars to the firm (round your response to two decimal places)