Abag is filled with marbles. you take out and mark 80 marbles. then you put the marbles back in the bag and mix the marbles. in a sample of 20 marbles, 4 of the marbles are marked. about how many marbles are in the bag?

Acampus club held a bake sale as a fund raiser, selling coffee, muffins, and bacon and eggs sandwiches. the club members charged $1 for a cup of coffee, 3$ for a muffin , and $4 for a back. and egg sandwich. they sold a total of 55 items , easing $119. of the club members sold 5 more muffins than cups of coffee, how many bacon and egg sandwiches he’s did they sell