Answer:
$650,000
Step-by-step explanation:
Operating cash flow = Total sales - Total variable cost - Fixed cost
Operating cash flow = Contribution - Fixed cost
Contribution = Total sales - Total variable cost. Let x be the contribution per unit
For 10,000 units
400,000 = 10,000x - 100,000
x = 500,000/10,000
x = 50
Contribution per unit = $50
Fore 15,000 units
Operating cash flow = 15,000(x) - 100,000
Operating cash flow = 15,000(50) - 100,000
Operating cash flow = 750,000 - 100,000
Operating cash flow = $650,000