Concord Corporation's high and low level of activity last year was 55000 units of product produced in May and 20000 units produced in November. Machine maintenance costs were $141000 in May and $64000 in November. Using the high-low method, determine an estimate of total maintenance cost for a month in which production is expected to be 55000 units. $141000 $121000 O $136000 O $136000 Sheffield Corp. has a unit contribution margin of $40 and a contribution margin ratio of 40%. How much is the selling price of each unit? $16. O $67. O $100. O Cannot be determined without more information. The following information is available for Swifty Corporation: Sales $560000 $150000 Total fixed expenses Total variable expenses Cost of goods sold 360000 320000 A CVP income statement would report O gross profit of $200000. O gross profit of $240000 O contribution margin of $240000. O contribution margin of $410000