Ira S. answered 04/06/17
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I can't do the graphs for you, but I can do some of this problem for you.
The total cost can be calculated as follows
C(x) = 85x+7200 with x<=300
The total revenue is
R(x) = 175x.
When you graph these 2 lines, where they meet is the break even point. In this case, it's when you produce 80 garments.
c(80) = 85(80) + 7200 = 14000
R(80 = 175(80) = 14000
So the cost and revenue is the same.
You make a profit for any items sold over 80 since the revenue line is above the cost line.
If your production line doesn't reach 80, the you are producing at a loss since the cost is above the revenue.
So the break even volume is 80, the break even revenue is $14000. 80 out of the 300 maximum is 26.67%. So if the production volume is at 26.67% of the maximum, your company will break even.
Hope this helped.