UNIT 8 $6,860 ($9,800 X .70) COST OF NEXT 7 UNITS = (8 X $6,860...

174. Correct answer c. Donaldson’s operating income based on variable costing is $14,800

calculated as follows.

Sales (900 x $100) $90,000

COGS [900 x ($30 + $20 + $10)] 54,000

Fixed manufacturing (1,000 x $5) 5,000

Variable selling (900 x $12) 10,800

Fixed selling 3,600

Fixed administrative 1,800

Operating income $14,800