5.	Caroline needs to make 60 cookies but if she follows her recipe she will make 72 so we need to find a way to make 12 cookies because following it normally the most we can make is 48. 48/12 is 4 so that means we need 1/4th the ingredients to make this happen. This means you will need 3/4ths flour; 5/12th cup powdered sugar; 1/4th cup cornstarch; and 1/2th cup butter added to the total ingredients to make the amount 60.
6.	To calculate what Randal will charge Andrea we must first identify what he charges. He charges the cost of materials, time spent, and adds a 15 percent of total operational costs. We know he worked 80 hours and the total material cost was 2125 so we can calculate right now the total cost is 3,565‬. When you add the 15% charge to 3565 the end result that she will be charged is 3,883.75‬.