\fCompute breakeven sales. (Use the rounded contribution margin ratio calculated in the previous part to compute breakeven sales.) Breakeven sales $ e Textbook and Media Save for Later Attempts: 0 of 3 used Submit Answer (b2) What is Ivanhoe's margin of safety? Margin of sefety $ e Textbook and Media Save for Later Attempts: 0 of 3 used Submit Answer If Ivanhoe's sales were to increase by $200,000 with no change in fixed expenses, by how much would operating income increase? (Use the rounded contribution margin ratio calculated in the previous part to compute breakeven sales.) Net Operating income will increase by