Question

A sandwich is made with 1 type of bread, 1 type of meat, and 1 type of cheese. There are 3 types of bread: white, wheat, or rye; 2 types of meat: turkey or roast beef; and 2 types of cheese: American or Swill. Draw a tree diagram to show the possible sandwich choices.

Answer 1

Graph: a.

The graph had to represent each of the data given,

. starting with 3 rows or branches for the 3 types of bread: white, wheat and rye

. followed by 2 branches coming out of each of the former bread branches to represent the 2 types of meat available for each type of bread: turkey and roast beef

. ending with the 2 types of each available for each type of bread and meat: American and Swill

The only graph with all the data represented is graph a.