Help Save & Exit Sub A retired couple supplement their income by making fruit pies, which they sell to a local grocery store. During the month of September they produce apple and grape pies. The apple pies are sold for $1.60 to the grocer, and the grape ples are sold for $1.30. The couple is able to sell all of the ples they produce owing to their high quality. They use fresh ingredients. Flour and sugar are purchased once each month. For the month of September, they have 1,200 cups of sugar and 1,850 cups of flour. Each apple ple requires 1/2 cups of sugar and 3 cups of flour, and each grape ple requires 2 cups of sugar and 3 cups of flour. a. Determine the number of grape and the number of apple pies that will maximize revenues if the couple working together can make an apple pie in 5 minutes and a grape ple in 3 minutes. Together, they plan to work no more than 50 hours. (Round your answers to nearest whole number. Omit the "$" sign in your response.) Apple Grape Revenue Pieces Pieces b. Determine the amounts of sugar, flour, and time that will be unused. (Leave no cells blank - be certain to enter"" wherever required. Round your intermediate calculations and final answers to the nearest whole number.) Sugar Flour Timp cups cups minutes 10