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# Is 1/s=(s^2)*(t/u)?

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Senior SC Moderator
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Is 1/s=(s^2)*(t/u)?  [#permalink]

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09 Mar 2017, 18:10
3
2
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Difficulty:

25% (medium)

Question Stats:

74% (01:13) correct 26% (01:33) wrong based on 206 sessions

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Is $$\frac{1}{s} = s^2*\frac{t}{u}$$?

(1) $$(\frac{1}{s})^3 = \frac{t}{u}$$

(2) $$s^3 = ut$$

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Re: Is 1/s=(s^2)*(t/u)?  [#permalink]

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09 Mar 2017, 18:45
D
Statement 1
Sufficient - yes

Statement 2
Sufficient-no is the answer to the question stem

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Re: Is 1/s=(s^2)*(t/u)?  [#permalink]

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10 Mar 2017, 01:59
1
St 1: 1/s^3 = t/u
rearranging, 1/s = s^2 x t/u. same expression. will always hold true. ANSWER

St 2: s^3 = ut. therefore 1/s = s^2 x 1/ut. not the sameexpression, but will hold true if t = 1. INSUFFICIENT

Option A
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Re: Is 1/s=(s^2)*(t/u)?  [#permalink]

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07 Oct 2017, 08:48
If the statement gives t is not equal to 1, then the answer would be D ?
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Re: Is 1/s=(s^2)*(t/u)?  [#permalink]

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07 Oct 2017, 09:39
@s wrote:
If the statement gives t is not equal to 1, then the answer would be D ?

not even then B would be sufficient.

what if t = -1? In this case as well t^2 will be 1. so with statement-2 along with information as t not equal 1, B will not be sufficient.
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Re: Is 1/s=(s^2)*(t/u)?  [#permalink]

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31 Dec 2017, 13:36
hazelnut wrote:
Is $$\frac{1}{s} = s^2*\frac{t}{u}$$?

(1) $$(\frac{1}{s})^3 = \frac{t}{u}$$

(2) $$s^3 = ut$$

VERITAS PREP OFFICIAL SOLUTION:

Correct Answer: A

Explanation: To simplify the question, it may be helpful to rewrite the question stem by cross-multiplying both sides of the equation to arrive at $$s^3t = u$$.

Therefore, the question may be rephrased: Is $$s^3t=u$$?
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Is 1/s=(s^2)*(t/u)?  [#permalink]

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09 May 2018, 08:57
Bunuel wrote:
hazelnut wrote:
Is $$\frac{1}{s} = s^2*\frac{t}{u}$$?

(1) $$(\frac{1}{s})^3 = \frac{t}{u}$$

(2) $$s^3 = ut$$

VERITAS PREP OFFICIAL SOLUTION:

Correct Answer: A

Explanation: To simplify the question, it may be helpful to rewrite the question stem by cross-multiplying both sides of the equation to arrive at $$s^3t = u$$.

Therefore, the question may be rephrased: Is $$s^3t=u$$?

Isn't statement 1 and statement 2 contradicting each other ?

statement 1 -> $$s ^3$$ =$$\frac {u}{t}$$
statement 2 -> $$s^3$$ = ut

Am i missing anything ?
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Is 1/s=(s^2)*(t/u)?  [#permalink]

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31 May 2018, 23:40
Bunuel wrote:
hazelnut wrote:
Is $$\frac{1}{s} = s^2*\frac{t}{u}$$?

(1) $$(\frac{1}{s})^3 = \frac{t}{u}$$

(2) $$s^3 = ut$$

VERITAS PREP OFFICIAL SOLUTION:

Correct Answer: A

Explanation: To simplify the question, it may be helpful to rewrite the question stem by cross-multiplying both sides of the equation to arrive at $$s^3t = u$$.

Therefore, the question may be rephrased: Is $$s^3t=u$$?

Bunuel

How is the 2nd statement not sufficient? We are able to answer the question right?Also, as someone mentioned above, the two statements never contradict each other in official questions. Atleast I have not seen any such question.
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Re: Is 1/s=(s^2)*(t/u)?  [#permalink]

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01 Jun 2018, 02:58
KS15 wrote:
Bunuel wrote:
hazelnut wrote:
Is $$\frac{1}{s} = s^2*\frac{t}{u}$$?

(1) $$(\frac{1}{s})^3 = \frac{t}{u}$$

(2) $$s^3 = ut$$

VERITAS PREP OFFICIAL SOLUTION:

Correct Answer: A

Explanation: To simplify the question, it may be helpful to rewrite the question stem by cross-multiplying both sides of the equation to arrive at $$s^3t = u$$.

Therefore, the question may be rephrased: Is $$s^3t=u$$?

Bunuel

How is the 2nd statement not sufficient? We are able to answer the question right?Also, as someone mentioned above, the two statements never contradict each other in official questions. Atleast I have not seen any such question.

Hello

Please look at the following solution to this question:
https://gmatclub.com/forum/is-1-s-s-2-t ... l#p1817685

Second statement is not the same as first statement, but if t=1, then answer to the question stem will be YES
but if t is not 1, then answer to the question stem will be NO
So the second statement is not sufficient to answer the question
Director
Joined: 21 May 2013
Posts: 660
Is 1/s=(s^2)*(t/u)?  [#permalink]

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01 Jun 2018, 03:07
Correct Answer: A

Explanation: To simplify the question, it may be helpful to rewrite the question stem by cross-multiplying both sides of the equation to arrive at $$s^3t = u$$.

Therefore, the question may be rephrased: Is $$s^3t=u$$?[/quote]
Bunuel

How is the 2nd statement not sufficient? We are able to answer the question right?Also, as someone mentioned above, the two statements never contradict each other in official questions. Atleast I have not seen any such question.[/quote]

Hello

Please look at the following solution to this question:
https://gmatclub.com/forum/is-1-s-s-2-t ... l#p1817685

Second statement is not the same as first statement, but if t=1, then answer to the question stem will be YES
but if t is not 1, then answer to the question stem will be NO
So the second statement is not sufficient to answer the question[/quote]

Thanks for sharing the link-quick couple of qs
1. In St 2, cant be just take reciprocal on both sides and check?
2. You did not talk about the two statements contradicting each other. Any official question you can share where this is happening?
Is 1/s=(s^2)*(t/u)? &nbs [#permalink] 01 Jun 2018, 03:07
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# Is 1/s=(s^2)*(t/u)?

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