LSAT 107 – Section 1 – Question 03

LSAT 107 - Section 1 - Question 03

October 1999

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT107 S1 Q03
+LR
Except +Exc
Strengthen +Streng
Value Judgment +ValJudg
A
3%
159
B
1%
157
C
91%
165
D
1%
156
E
4%
156
129
139
150
 +Easier 147.515 +SubsectionMedium

There should be a greater use of gasohol. Gasohol is a mixture of alcohol and gasoline, and has a higher octane rating and fewer carbon monoxide emissions than straight gasoline. Burning gasohol adds no more carbon dioxide to the atmosphere than plants remove by photosynthesis.

Summarize Argument
The author concludes gasohol should get more use. Why? Because plants can remove the amount of carbon dioxide gasohol produces, gasohol has a higher octane rating than gasoline, and burning gasohol emits less carbon monoxide than burning gasoline.

Notable Assumptions
The author assumes that gasohol and gasoline would be used for the same purpose, and that there’s no advantage to using gasoline over gasohol that outweighs the apparent benefits of gasohol.

A
Cars run less well on gasoline than they do on gasohol.
This strengthens the argument by ruling out a potential weakness of gasohol. It’s another reason to favor gasohol over straight gasoline.
B
Since less gasoline is needed with the use of gasohol, an energy shortage is less likely.
This strengthens the argument by providing another advantage to gasohol: it would save on gasoline usage, reducing the risk of an energy shortage.
C
Cars burn on the average slightly more gasohol per kilometer than they do gasoline.
This is a disadvantage to using gasohol, not an advantage. It implies drivers will have to refill their vehicles more often if gasohol is used widely.
D
Gasohol is cheaper to produce and hence costs less at the pump than gasoline.
This strengthens the argument by ruling out a potential weakness. It eliminates the possibility that gasohol is more expensive than gasoline.
E
Burning gasoline adds more carbon dioxide to the atmosphere than plants can remove.
This strengthens the argument by implying gasohol—which adds less carbon dioxide to the atmosphere than plants can remove—produces less carbon dioxide than gasoline. It’s an advantage to making the switch.

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LSAT PrepTest 107 Explanations

Section 1 - Logical Reasoning

Section 2 - Reading Comprehension

Section 3 - Logical Reasoning

Section 4 - Logical Reasoning

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