1. 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
Based on the values provided in either statement (1) or (2), the typing rate of a single
typist is 7 1
2 minutes per page:
~1 typist!~30 minutes!
4 pages 5 7 1
2
Once you know the typing rate, you can apply that rate to the numbers given in the
question; so the correct answer is choice (D). You don’t need to actually answer the
question. Just for the record, however, 5 typists could type thirty pages in 45 minutes.
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