How many cups of dry macaroni is in a regular size box?

Explanations:

A standard size box of elbow macaroni contains 16 ounces. Each ounce of macaroni is equal to approximately 1/8 of a cup. Therefore, a 16 ounce box of macaroni contains 16/8 = 2 cups. Since a pound is equal to 16 ounces, a 2 pound box of macaroni contains 4 cups.