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# A number a is squared and then multiplied by negative 3. The

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Senior Manager
Affiliations: UWC
Joined: 09 May 2012
Posts: 393

Kudos [?]: 1612 [0], given: 100

GMAT 1: 620 Q42 V33
GMAT 2: 680 Q44 V38
GPA: 3.43
WE: Engineering (Entertainment and Sports)
A number a is squared and then multiplied by negative 3. The [#permalink]

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27 May 2012, 09:22
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Difficulty:

15% (low)

Question Stats:

84% (01:17) correct 16% (01:55) wrong based on 43 sessions

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A number a is squared and then multiplied by negative 3. The result of this operation is equal to three times the sum of three times a and two. What is one possible value of a ?

A. -3
B. -2
C. 1
D. 2
E. 3
[Reveal] Spoiler: OA

Kudos [?]: 1612 [0], given: 100

Senior Manager
Joined: 13 May 2011
Posts: 300

Kudos [?]: 288 [0], given: 11

WE 1: IT 1 Yr
WE 2: Supply Chain 5 Yrs
Re: A number a is squared and then multiplied by negative 3. The [#permalink]

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27 May 2012, 10:57
-3*a^2=3(3a+2)
a= -2 or -1
a=-2=B

Kudos [?]: 288 [0], given: 11

Math Expert
Joined: 02 Sep 2009
Posts: 41873

Kudos [?]: 128604 [0], given: 12180

Re: A number a is squared and then multiplied by negative 3. The [#permalink]

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28 May 2012, 01:22
macjas wrote:
A number a is squared and then multiplied by negative 3. The result of this operation is equal to three times the sum of three times a and two. What is one possible value of a ?

A. -3
B. -2
C. 1
D. 2
E. 3

A number a is squared and then multiplied by negative 3 --> $$a^2*(-3)$$;
The result of this operation is equal to three times the sum of three times a and two --> $$3(3a+2)$$;

So, we have that $$a^2*(-3)=3(3a+2)$$ --> $$a^2+3a+2=0$$ --> $$a=-2$$ or $$a=-1$$.

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Kudos [?]: 128604 [0], given: 12180

Re: A number a is squared and then multiplied by negative 3. The   [#permalink] 28 May 2012, 01:22
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