Answer
An 11% decrease in contribution margin will cause operating income to
decline by USD 275,000 as calculated below. Revised operating income shall be USD 125,000
Work Step by Step
(W-1)
Original contribution margin (10,400,000 - 7,900,000) = 2,500,000
Revised Contribution margin (2,500,000 × 89%) = 2,225,000