= Homework: HW4 Question 2, Problem B.22 Part 5 of 9 HW Score: 57.67%, 57.67 of 100 points Points: 4.44 of 40 Kalyan Singhal Corp. makes three products, and it has three machines available as resources as given in the following LP problem: Maximize contribution = 4X, +4X2 +7X3 1X, +7X2 + 4X, S 80 2X2 + 1X2 + 7X3 s 84 8X, +4X2 + 1X3 s 80 X1, X2, X3 20 (C1: hours on machine 1) (C2: hours on machine 2) (Cz: hours on machine 3) 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). b) Machine 1 has hours of unused time available at the optimal solution (round your response to two decimal places)