Answer: decrease by $31,875
Explanation:
Net Operating income;
= Sales - variable cost - fixed cost
= (70 * 3,000) - ( 50 * 3,000) - 25,000
= $35,000
Sales volume decreases by 25%;
= 3,000 * ( 1 - 25%)
= 2,250 units
Variable cost per unit increases by 15%;
= 50 * ( 1 + 15%)
= $57.50
New Net Operating income;
= (70 * 2,250) - (57.50 * 2,250) - 25,000
= $3,125
Net Operating income change;
= 3,125 - 35,000
= -$31,875
Decrease by $31,875