Answer:
profit increase by 750 dollars
Explanation:
We must base our analisys considering only the loan board associated cost:
contribution per long board:
300 sales price - 225 variable cost = $75
total contribution for 250 units:
250x$75 = 18,750
increase in fixed cost:
69,000 - 51,000 = 18,000
incremental operating profit:
18,750 contribution - 18,000 fixed cost = 750