Lizzy: A teacher is making packed lunches for a field trip. Each student needs 2 sandwiches, and will travel in a group with 5 other students. There are a total of 5 groups. How many pieces of bread will the teacher need to make enough sandwiches for all the students?.
Me: Hmmm, let me think. I think this is the detailed solution:
If each student travels with 5 others, then groups are made up of 5 + 1 = 6 students. This means there are a total of 5 groups * 6 students = 30 students in the class. Each student needs 2 sandwiches, which means the teacher will make 30 students * 2 sandwiches per student = 60 sandwiches in total. Therefore, the teachers will need 60 sandwiches * 2 pieces of bread per sandwich = 120 pieces of bread. Final answer: 120.