EXERCISE 20.11 Applying CVP Concepts @ 1020-1, L020-2, L020-4, L020-5, 4020-6 Guthrie Industries manufactures and sells dog collars. The collars sell for $12 each. Information about the company's costs is as follows. 2 Variable manufacturing cost per unit Variable selling and administrative cost per unit Fixed manufacturing overhead per month Fixed selling and administrative cost per month 1 $250,000 200,000 a. Determine the company's monthly break-even point in units. b. Determine the sales volume (in dollars) required for a monthly operating income of $900,000. c. Compute the company's margin of safety if its current monthly sales level is $1,400,000. d. Estimate the amount by which monthly operating income will increase if Guthrie anticipates a $60,000 increase in monthly sales volume. Page 916