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(30,000,000)(2,000,000)

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Retired Moderator
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Joined: 07 Jun 2014
Posts: 4804
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 163

Kudos [?]: 2762 [0], given: 394

(30,000,000)(2,000,000) [#permalink] New post 19 May 2018, 12:04
Expert's post
00:00

Question Stats:

88% (00:15) correct 11% (00:11) wrong based on 101 sessions
Quantity A
Quantity B
(30,000,000)(2,000,000)
(15,000,000)(4,000,000)


A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

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Retired Moderator
User avatar
Joined: 07 Jun 2014
Posts: 4804
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 163

Kudos [?]: 2762 [0], given: 394

Re: (30,000,000)(2,000,000) [#permalink] New post 28 May 2018, 13:12
Expert's post
Explanation

The GRE calculator will not be able to handle that many zeros. Start this calculation on paper. To make things easier, you could cancel as many zeros as you want, as long as you do the same operation to both quantities. For instance, you could divide both sides by 1,000,000,000,000 (just think of this as “1 with 12 zeros”), to get:

Quantity A
Quantity B
\(30 \times 2\)
\(15 \times 4\)



Or, just use a bit of logic: 30 million times 2 million is 60 million million, and 15 million times 4 million is also 60 million million. (A “million million” is a trillion, but this doesn’t matter as long as you’re sure that each Quantity will have the same number of zeros.)

Hence option C is correct!
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Sandy
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GRE Instructor
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Joined: 10 Apr 2015
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Kudos [?]: 3995 [1] , given: 65

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Re: (30,000,000)(2,000,000) [#permalink] New post 04 Jun 2018, 09:23
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Expert's post
sandy wrote:
Quantity A
Quantity B
(30,000,000)(2,000,000)
(15,000,000)(4,000,000)


A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.


We can solve this question using matching operations

Given:
Quantity A: (30,000,000)(2,000,000)
Quantity B: (15,000,000)(4,000,000)

Rewrite quantities as follows:
Quantity A: (30)(1,000,000)(2)(1,000,000)
Quantity B: (15)(1,000,000)(4)(1,000,000)

Divide both quantities by 1,000,000 to get:
Quantity A: (30)(2)(1,000,000)
Quantity B: (15)(4)(1,000,000)

Divide both quantities by 1,000,000 to get:
Quantity A: (30)(2)
Quantity B: (15)(4)

Evalauate to get:
Quantity A: 60
Quantity B: 60

Answer: C

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Joined: 22 Feb 2018
Posts: 163
Followers: 2

Kudos [?]: 136 [1] , given: 22

Re: (30,000,000)(2,000,000) [#permalink] New post 05 Jun 2018, 17:32
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Answer: C
First we compare the zeros.
A’s result has 13 zeros and the integer is 6.
B’s result has 12 zeros and the integer is 60.
So these two values are equal.

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Re: (30,000,000)(2,000,000)   [#permalink] 05 Jun 2018, 17:32
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