LSAT 106 – Section 2 – Question 19

LSAT 106 - Section 2 - Question 19

June 1999

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT106 S2 Q19
+LR
+Exp
Must be true +MBT
Conditional Reasoning +CondR
Quantifier +Quant
A
21%
162
B
4%
160
C
33%
163
D
40%
168
E
2%
161
157
170
180
 +Hardest 147.566 +SubsectionMedium

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.

Summary
Almost all mail that is correctly addressed gets to its destination within 2 business days of being sent.
If correctly addressed mail takes longer than 2 business days to reach its destination, it must be damaged in transit.
Most mail arrives more than 2 business days after being sent.

Notable Valid Inferences
If almost all mail that’s correctly addressed gets to its destination within 2 business days, but most mail arrives more than 2 business days after being sent, that means a significant portion of overall mail must be incorrectly addressed. If this were not the case, then we’d expect most mail to arrive within 2 business days. But most mail takes longer to arrive.

A
A large proportion of the mail that is correctly addressed is damaged in transit.
Could be false. It’s possible only a tiny proportion of correctly addressed mail is damaged in transit. After all, nearly all correctly addressed mail arrives within 2 business days, so those pieces don’t have to be damaged.
B
No incorrectly addressed mail arrives within two business days of being sent.
Could be false. Some incorrectly addressed mail could arrive within two days. We were never told incorrectly addressed mail always takes longer than two days.
C
Most mail that arrives within two business days of being sent is correctly addressed.
Could be false. Most mail that arrives within 2 days might be incorrectly addressed. For example, there are 5 correct pieces and 20 incorrect pieces. 4 correct pieces and 5 incorrect pieces could arrive within 2 days. In this example most of the 2-day arrivals are incorrect.
D
A large proportion of mail is incorrectly addressed.
Must be true. If this weren’t true, we’d expect most mail to arrive within 2 days, because nearly all correctly addressed mail arrives within 2 days. So there has to be a large proportion of incorrectly addressed mail in order for most mail overall to take longer than 2 days.
E
More mail arrives within two business days of being sent than arrives between two and three business days after being sent.
Could be false. We know most mail takes longer than 2 days to arrive. It’s possible, for example, that all of this later-than-2-day mail arrives between 2 and 3 days after being sent. So more mail can arrive between 2 and 3 days of being sent than within 2 days.

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LSAT PrepTest 106 Explanations

Section 1 - Logical Reasoning

Section 2 - Logical Reasoning

Section 3 - Logical Reasoning

Section 4 - Reading Comprehension

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