20-28 Multiple-Product Break-Even, Change in Fixed Costs Quble, Inc, manufactures two products quarks and chatms, Fixed costs equal $375 cos quark selk for $2.20 and has variable costs of S0.88, each chatm sells for $3 and has variable costs of $2.25. Required: 1. Wh at is the contribution margin per unit and the contribution margin ratio for 1OS, LO 2. Quible sells 280,000 quarks and 420,0 charms, what is the operating 3. Assuming the sales mix given in Requirement 2, how many quarks and charms 4 Assume Quible has the opportunity to rearrange its plant to produce only cham quarks and charms? income must be sold for Quible to break even? If this is done, fixed costs will decrease by $70,000, and 700,000 charms can be produced and sold. Is this a good idea Explain