Answer:
decrease of $8,900
Explanation:
Use the following formula to calculate the net operating income
Net operating income = Sales - Variables cost - Fixed cost
At Current Sales Level
Sales = 5,000 x $160 = $800,000
Variable cost = 5,000 x $48 = $240,000
Fixed cost = $499,000
Placing values in the formula
Net Operaitng Income = $800,000 - $240,000 - $499,000 = $61,000
At Increased Sales level
Sales = 5,900 x ($160-$13) = $867,300
Variable cost = 5,900 x $48 = $283,200
Fixed cost = $532,000
Placing values in the formula
Net Operaitng Income = $867,300 - $283,200 - $532,000 = $52,100
Now calculate the change in net operating income
Change in net operating income = Net operating income at current sales - net operating income at increased sales = $61,000 - $52,100 = $8,900
Hence, Net operating income is decreased by $8,900
