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Updated on: 22 Aug 2021, 11:32
Originally posted by x97agarwal on 28 Jul 2008, 15:29.
Last edited by Bunuel on 22 Aug 2021, 11:32, edited 2 times in total.
Last edited by Bunuel on 22 Aug 2021, 11:32, edited 2 times in total.
Renamed the topic and edited the question.
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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Certain instruments used in veterinary surgery can be made either of stainless steel or of nylon. In a study of such instruments, 50 complete sterilizations of a set of nylon instruments required 3.4 times the amount of energy used to manufacture that set of instruments, whereas 50 complete sterilizations of a set of stainless steel instruments required 2.1 times the amount of energy required to manufacture that set of instruments.
If the statements above are true, each of the following could be true EXCEPT:
(A) The 50 complete sterilizations of nylon instruments used more energy than did the 50 complete sterilizations of the stainless steel instruments.
(B) More energy was required for each complete sterilization of the nylon instruments than was required to manufacture the nylon instruments.
(C) More nylon instruments than stainless steel instruments were sterilized in the study.
(D) More energy was used to produce the stainless steel instruments than was used to produce the nylon instruments.
(E) The total cost of 50 complete sterilizations of the stainless steel instruments was greater than the cost of manufacturing the stainless steel instruments.
If the statements above are true, each of the following could be true EXCEPT:
(A) The 50 complete sterilizations of nylon instruments used more energy than did the 50 complete sterilizations of the stainless steel instruments.
(B) More energy was required for each complete sterilization of the nylon instruments than was required to manufacture the nylon instruments.
(C) More nylon instruments than stainless steel instruments were sterilized in the study.
(D) More energy was used to produce the stainless steel instruments than was used to produce the nylon instruments.
(E) The total cost of 50 complete sterilizations of the stainless steel instruments was greater than the cost of manufacturing the stainless steel instruments.
Show SpoilerKaplan OE
Official LSAT Test Prep 9, Section 2, Q-17
(B) If this one reminded you of a logic game, so much the better: Your LG skills serve
you well here. First, note that the question asks for the one thing that cannot be true. Next,
draw out the information the stimulus gives — and doesn’t give. There are two sets of
instruments; the same procedures are done to each; and the procedures yield similar
results. It takes more energy to sterilize a set of these instruments than it does to
manufacture them. But we don’t know how many instruments make up each set, nor do
we know exactly how much energy it takes to manufacture either set. It could take more to
make nylon tools, or it could take more to make stainless steel, or it could take equal
amounts of energy for both. We just don’t know. Unfortunately there’s no way to predict
the answer here. It’s just a matter of slogging through the choices until you find the right
one.
(A) could be true. If the same amount of energy was required to manufacture both the
nylon and the steel instruments, then sterilizing the nylon instruments would have been
more energy consuming than sterilizing the steel. (B), however, can’t be true, and yes, it
takes a little math-thinking, but that’s life. (You could have skipped this choice and
checked out the others; if all of them can be true, then (B) must be correct whether or not
you understand why.) If 50 complete sterilizations of the nylon instruments took 3.4 times
the energy to make that set, then they should be able to do roughly 15 sterilizations with
the same energy as manufacture. One complete sterilization, then, must have taken far less
than the energy of manufacture. (C) could be true; as we noted above, we don’t know how
many types of instrument appear in each kit, so there could be more nylon instruments
than steel. Since both kits were sterilized an equal number of times, more nylon
instruments could have been sterilized. (D) absolutely could be true, since we don’t know
how much energy was required to produce either set. (E) is also quite possible. If
materials are cheap, and energy is very expensive, then using far more energy to sterilize
than manufacture steel instruments could make sterilizing them more expensive than
making them in the first place.
(B) If this one reminded you of a logic game, so much the better: Your LG skills serve
you well here. First, note that the question asks for the one thing that cannot be true. Next,
draw out the information the stimulus gives — and doesn’t give. There are two sets of
instruments; the same procedures are done to each; and the procedures yield similar
results. It takes more energy to sterilize a set of these instruments than it does to
manufacture them. But we don’t know how many instruments make up each set, nor do
we know exactly how much energy it takes to manufacture either set. It could take more to
make nylon tools, or it could take more to make stainless steel, or it could take equal
amounts of energy for both. We just don’t know. Unfortunately there’s no way to predict
the answer here. It’s just a matter of slogging through the choices until you find the right
one.
(A) could be true. If the same amount of energy was required to manufacture both the
nylon and the steel instruments, then sterilizing the nylon instruments would have been
more energy consuming than sterilizing the steel. (B), however, can’t be true, and yes, it
takes a little math-thinking, but that’s life. (You could have skipped this choice and
checked out the others; if all of them can be true, then (B) must be correct whether or not
you understand why.) If 50 complete sterilizations of the nylon instruments took 3.4 times
the energy to make that set, then they should be able to do roughly 15 sterilizations with
the same energy as manufacture. One complete sterilization, then, must have taken far less
than the energy of manufacture. (C) could be true; as we noted above, we don’t know how
many types of instrument appear in each kit, so there could be more nylon instruments
than steel. Since both kits were sterilized an equal number of times, more nylon
instruments could have been sterilized. (D) absolutely could be true, since we don’t know
how much energy was required to produce either set. (E) is also quite possible. If
materials are cheap, and energy is very expensive, then using far more energy to sterilize
than manufacture steel instruments could make sterilizing them more expensive than
making them in the first place.
x97agarwal
b) More energy was required for each complete sterilization of the nylon instruments than was required to manufacture the nylon instruments.
10 complete sterilizations of set --> 3.4 time amount of energy for manufacture set ..
1 complete sterilizations of set -> 0.34 time amount of energy for manufacture set ..
Argument clearly disapprove B..
16 Apr 2021, 08:15
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x97agarwal
OFFICIAL EXPLANATION
(A) No. The passage establishes a relation between the amount of energy used to sterilize nylon instruments and the amount of energy required to produce these instruments. It also establishes a relation between the amount of energy used to sterilize stainless steel instruments and the amount of energy required to produce these instruments. However, the passage gives no information to compare nylon and steel instruments to one another. Therefore, it can be true that it takes more energy to sterilize nylon instruments than to sterilize steel instruments.
(B) Yes. The passage states that 50 complete sterilizations of nylon surgical instruments takes 3.4 times more energy than manufacturing those instruments. Making the reasonable assumption that each sterilization requires the same amount of energy, one complete sterilization should require 3.4/50 (a number less than one) times the energy required to produce the instruments. In other words, it can not be true that “more energy was required for each complete sterilization of the nylon instruments than was required to manufacture the nylon instruments.”
(C) No. Nothing indicates the total number of instruments of either type used in the study. Therefore, it can be true that more nylon instruments were used in this study than stainless steel instruments.
(D) No. The passage establishes a relation between the amount of energy used to sterilize nylon instruments and the amount of energy required to produce these instruments. It also establishes a relation between the amount of energy used to sterilize stainless steel instruments and the amount of energy required to produce these instruments. However, the passage gives no information to compare nylon ;and steel instruments to one another. Therefore, it can be true that more energy was used to produce the steel instruments the nylon instruments.
(E) No. While the passage implies that the energy costs of 50 complete sterilization of stainless steel instruments is greater than the energy costs of manufacturing them, nothing in the passage indicates the total costs of manufacturing the instruments. Perhaps the raw materials for the instruments are expensive, or maybe labor costs for manufacturing are much greater than for sterilization.
