Selling price and unit costs for a product are: Selling price $84.00 Variable costs $56.00 Fixed costs $16.00 If the selling price was increased by 10%, what would be the percentage change in the unit contribution, assuming other variables remain unchanged? 23 30 10 77 Costs have been recorded at the following three output levels: Production output 100,000 units 105,000 units 110,000 units Total costs $207,000 $213,000 $218,200 Using the high-low method, what is the variable cost per unit (to two decimal places)? The production wages in a company for a period include overtime premium paid to direct operatives. The company's policy is to treat overtime premium as a direct cost. What are the correct bookkeeping entries to account for the overtime premium? Dr Production overhead Cr Wages control Dr Work-in-progress Cr Production overhead Dr Work-in-progress Cr Wages control Dr Production overhead Cr Work-in-progress