The correct answer is (D). The two statements provide essentially the same information: the rate at which a typist types. Since this rate would be sufficient information to answer the question, the correct answer must be choice (D). If you don’t recognize this shortcut, you can determine the speed (or rate) at which a typist types, in terms of pages per unit of time, by setting up a general equation to express the time required by a typist to type one page: ~# of typists!~time! # of pages 5 time per page .
