Question

The staff of a school cafeteria makes 94 sandwiches for students on a field trip. If n represents the number of sandwiches eaten by the students, which expression represents the number of remaining sandwiches?
A.n-94
B.94-n
C.94n
D.94+n

Answer 1

Well then have the sandwiches (s) and the students (n).

Well if there are 94 sandwiches, and 30 of them are eaten, we take...

94 - 30 = 64.

Notice how we did that?

s - n

In this case, s=94.

94 - n is the answer.

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