You probably know the drill. You have 75 minutes to answer 60 math questions. The first set of 25 multiple-choice questions must be completed in 30 minutes.
There are 20 packages of bagels on a shelf in a store
and each package contains the same number of bagels.
If 3 of these packages contain a total of 18 bagels, how
many bagels are there in 7 of these packages?
(A) 21 (B) 36 (C) 40 (D) 42 (E) 49