"Nearly all mail that is correctly addressed arrives at its destination within two business days of being sent. In fact, correctly addressed mail takes longer than this only when it is damaged in transit. Overall, however, most mail arrives three business days or more after being sent."
If the statements above are true, which one of the following must be true?
A) A large proportion of the mail that is correctly addressed is damaged in transit
B) No incorrectly addressed mail arrives within two business days of being sent
C) Most mail that arrives witin two business days of being sent is correctly addressed
D) A large proportion of mail is incorrectly addressed
E) More mail arrives within two business days of being sent than arrives between two and three business days after being sent
2007-01-09
03:58:53
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10 answers
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asked by
Bobby
2
in
Education & Reference
➔ Trivia
From the October 1996 LSAT Section 2 #19
2007-01-09
03:59:22 ·
update #1
The answer is D.
Reasoning:
The question asks what MUST be true. This means the answer has to be true, not could be, and we cannot assume it to be.
A) We have no idea that the correctly addressed mail is damaged in transit. Just because the mail overall is taking 3 days, we cannot assume this is the reason.
B) This statement is saying that none of the incorrectly addressed mail arrives within two days. This is also an assumption, because some incorrect mail could.
C) Wrong. If there are 400 out of 800 letters arriving with incorrect addresses in 2 days, and then 200 out of 200 letters arriving with correct addresses in 2 days, it would be the incorrect mail thats most. Since thats possible, this answer is wrong.
E) This answer is wrong because if it were true, then most mail couldn't arrive in 3 business days as stated in the question.
We can only KNOW that a large proportion of mail is incorrectly addressed, based on the question. D is your answer.
2007-01-10
07:03:49 ·
update #2