7. (15 Points) The following information is given for XYZ, Inc. Unit Sa os price $10 Variable cost per unit S6 $50,000 Totalfixed costs Determine the following a Contribution margin per unit b. Contribution margin ratio Break even sales in units d Break even sales in dolls e Sales in unuts required to achieve a net income of $4.000 Sales nuits required to achieve net income of 15 percent of sales