Answer:
Controllable margin= $300,000
Controllable margin in %= 33.3%
Explanation:
Controllable margin is sales revenue less controllable variable costs and fixed cost.
Controllable margin= Sales revenue - controllable variable cost - controllable fixed costs
Controllable margin= contribution margin - fixed costs
= 500,000 - 200,000= 300,000
Controllable margin in %= 300,000/900,000 × 100 =33.3%
Controllable margin in %= 33.3