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Problem Set: Module 4 eBook Show Me How . PROGOZAALGO Contribution Margin ' BEOB'MALGO Sally Company sells 25,000 units at $15 per unit. Variable costs are $11.40 per unit, and fixed costs are $30,600. . EX.06.0i Determine (a) the contribution margin ratio, (b) the unit contribution margin, and (c) operating income. a. Contribution margin ratio (Enter as a whole number.) [: % b. Unit contribution margin (Round to the nearest cent.) $[:] per unit c. Operating income $[:] . BE.06.02.ALGO