Haley would like to make a 5-pound coffee mixture that is 60% sumatra coffee bean blend. She has several pounds of a mixture that is 20% sumatra beans and another mixture blend with 80% sumatra beans. Let x represent the amount of the 20% blend and y represent the amount of the 80% blend to find out how many pounds of each mixture hailey will need.

what is the system that models this situation?

what is the solution to the system: show your work.