Production Volume4,000 Units5,000 UnitsDirect Materials$85.80 per unit$85.80 per unitDirect Labor$56.10 per unit$56.10 per unitManufacturing overhead$73.60 per unit$62.10 per unitThe best estimate of the total cost to manufacture 4,300 units is closest to:

4300 units would cost  $ 898461 or $ 208.9 ≅ $ 209 per unit

Explanation:

Production Volume                   4,000 Units       5,000 Units

Direct Materials                 $85.80 per unit        $85.80 per unit

Direct Labor                     $56.10 per unit             $56.10 per unit

Manufacturing overhead   $73.60 per unit           $62.10 per unit

Total Manufacturing Costs   $ 215.5 per unit         $ 203.7 per unit

The best estimate of the total cost to manufacture 4,300

4000 units at $ 215.5 = $ 862,000

5000 units at $ 203.7= $1018500

9000 units would Cost = $ 862,000+$1018500= $ 1880500

We have taken the total of the two costs and then divided with the number of 9000 units to get an average price as the fixed costs are decreasing as the number of units increase from 4000 to 5000.

4300 units would cost = $ 1880500/ 9000 * 4300= $ 898461 or $ 208.9 ≅

$ 209 per unit