Amir, Chaya and Heejin volunteer at an organization that prepares bagged lunches for the hungry. Each bag contains a sandwich, chips, carrots, a cookie and a bottle of water. Each volunteer either makes sandwiches or assembles the lunches by bagging the items. In one hour Amir can make 30 sandwiches or bag 20 lunches. Chaya can make 25 sandwiches or bag 25 lunches. Heejin can make 10 sandwiches or bag 30 lunches. Who has the absolute advantage in making sandwiches? Amir Chaya Heejin Robert