Please have detailed analysis and calculations

Sports To Go is organized into three departments. The following sales and cost data are available for the prior year: Sales Less variable costs Contribution margin Less fixed costs Profit Water $160,000 64.000 96,000 40.000 $ 56.000 Foot $96,000 42.000 54,000 16.000 $ 38.000 Field $150,000 84.000 66,000 32.000 $ 34.000 Total $406,000 190.000 216,000 88.000 $128.000 percentage value to two a. What is Sports To Go's weighted average contribution margin ratio? Round your decimal places. b. What level of sales is needed for Sports to Go to earn a profit of $156,720 assuming the same ratio of units sold and same selling price per unit? c. Sports To Go places an advertisement in the local paper each week. All else equal, which department would you emphasize in the advertisement