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Question 3: when unit selling price increases and assuming that the other variable remain constant, then the contribution margin increases.See the example, selling price $10 COGS: V Manufacturing costs $4 V marketing costs 1 COGS 5 Contribution margin 5 N...

labor 1835/5000*100%= 36.7% material 18%*5000= 900 rent 25%*5000= 1250 misc 1015/5000*100%= 20.3 labor $1835 36.7% material 900 18% rent 1250 25% misc 1015 20.3% total $5000 100%

x+3/13=5/13 x=5/13-3/13 x=2/13

x=9/5 y=21/5 solve one equation for x and plug the answer to the other equation and solve it