Answer:
1) 25%
Dept. Sales COGS Direct Expenses Indirect Expenses
1 1,080,000 708,000 102,000 88,000
2 480,000 158,000 48,000 108,000
3 780,000 308,000 158,000 28,000
total 2,340,000 1,174,000 308,000 224,000
contribution to overhead = sales - COGS - direct expenses = $1,080,000 - $708,000 - $102,000 = $270,000
contribution to overhead as percentage of sales = $270,000 / $1,080,000 = 0.25 = 25%
2) A. $9,280.
overhead:
direct labor, NOT INCLUDED
indirect labor, $7,100
direct materials, NOT INCLUDED
property taxes on production facility, $860
factory heat, lights and power, $1,060
insurance on plant and equipment, $260
total overhead = $9,280