A cement manufacturer has supplied the following data: Tons of cement produced and sold .. 260,000 $1,118,000 Sales revenue .... . Variable manufacturing expense. Fixed manufacturing expense.. Variable selling and administrative expense Fixed selling and administrative expense. Net operating income.. $429,000 $288,000 $91,000 $228,000 $82,000 The company's contribution margin ratio is closest to: 46.5% 53.5% 7.4% 42.8% Laro Corporation produces and sells a single product with the following characteristics: Per Unit Percent of Sales Selling price. Variable expenses . Contribution margin...... $150 75 $75 100% 50% 50% The company is currently selling 5,000 units per month. Fixed expenses are $302,000 per month. Consider each of the following questions independently. This question is to be considered independently of all other questions relating to Laro Corporation. Refer to the original data when answering this question The marketing manager would like to cut the selling price by $13 and increase the advertising budget by $17,000 per month. The marketing manager predicts that these two changes would increase monthly sales by 1,200 units. What should be the overall effect on the company's monthly net operating income of this change? Decrease of $57,400 Decrease of $7,600 Increase of $57,400 Increase of $147,400 O OO