Required A Required B Assume that more than one product is being sold in each of the four following case situations: (Loss amounts should minus sign.) Case #3 Case #1 453,000 S $ $ Sales Variable expenses Fixed expenses Case #2 208,000 141,440 50,000 Case #4 299,000 98,670 218,000 (17,670) 67% 474,000 82,000 $ $ 16,560 $ $ Net operating income (loss) Contribution margin ratio (percent) 60,140 38 % 32% 80 %