true or false problem

9. Products costs include only direct labor and factory overhead. TF 10. A mixed cost include both a variable cost and a fixed cost. TF 11. When computing the cost per equivalent unit, it is necessary to consider the percentage completion of the units in beginning inventory under the weighted average method. 12. A cost that differs from one month to another is known as a sunk TF cost. 13. A decrease in the number of units sold will decrease the break-even point TF TF 14. For a given level of sales, a low contribution margin ratio will produce more net operating income than a high contribution margin ratio. 15. The margin of safety is the amount by which sales can decrease before losses are incurred by the company. TF 26 GA