1. True False (15 points) 1 2 3 4 5 7 8 9 10 6. Under variable costing, the fixed manufacturing overhead is charged as an expense in the current period 7. Net income computed under variable costing is unaffected by changes in production levels. 8. Mixed costs change proportionately with changes in the activity level. 9. The contribution margin ration is computed by dividing contribution margin by unit selling price. 10. Target net income is an income objective for individual product lines set by management