Answer:
The net operating income for the month under variable costing is $11,550
Explanation:
In order to calculate The net operating income for the month under variable costing for Farron Corporation we would have to make the following calculations:
According to the given data:
i) Direct Material=$32  
ii) Direct labor=$74  
iii) Variable manufacturing overhead=	$20  
Hence, Variable costing unit product cost (i + ii + iii)=  $126  
A) Sales ($168 per unit * 9250 units sold)=$1,554,000
B) Less variable expenses:  
Variable cost of goods sold  
($126 per unit * 9250 units sold)=$1,165,500  
Variable selling and administrative  
($24 per unit × 9250 units)	$222,000	$1,387,500
C) Contribution margin (A – B)=$166,500
D) Less : fixed expenses  
Fixed manufacturing overhead= $144,750  
Fixed selling and administrative	$10,200	$154,950
E) Net operating Income ( C-D)=$11,550
The net operating income for the month under variable costing is $11,550