Answer part D please

Kalyan Singhal Corp. makes three products, and it has three machines available as resources as given in the following LP problem: Maximizecontribution=5X1+4X2+3X31X1+7X2+4X3902X1+1X2+7X3968X1+4X2+1X390X1,X2,X30(C1.hoursonmachine1)(C2.hoursonmachine2)(Choursonmachine3) a) Using a computer software for solving LP, the optimal solution achieved is: X1=7.08 (round your response to two decimal places). X2=5.62 (round your response to two decimal places). X3=10.89 (round your response to two decimal pleses). Contribution (objective value) = (round your response to two decimal places). b) Machine 1 has 0 hours of unused time available at the optimal solution (round your response to two decimal places). Marhina ? has on hnure of unuced time availahle at the antimal anlution imund unur reennnse th twen X1=7.08 (round your response to two decimal places). x2=5.62 (round your response to two decimal places). X3=10.89 (round your response to two decimal places). Contribution (objective value) = (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). Machine 2 has 0 hours of unused time available at the optimal solution (round your response to two decimal places). Machine 3 has 0 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 0.54 dollars to the firm (round your response t two decimal places). d) An additional 15 hours of time available for the second machine, at no cost to the firm, are going to increase objective value by dollars (round your response to two decimal places)