Answer: a.$10,904 increase
Step-by-step explanation:
Operating income before sales increase:
= Sales - Variable costs - Fixed costs
= 551,000 - (71% * 551,000) - 207,000
= -$47,210
Operating income after sales increase:
Sales increases to:
= 551,000 + 37,600
= $588,600
= 588,600 - (71% * 588,600) - 207,000
= -$36,306
Difference:
= -47,210 - (-36,306)
= Increase of $10,904