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The number of boys

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The number of boys [#permalink] New post 15 Jun 2018, 04:40
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Question Stats:

60% (01:53) correct 40% (00:49) wrong based on 15 sessions
Attachment:
test.jpg
test.jpg [ 52.88 KiB | Viewed 243 times ]


Quantity A
Quantity B
The number of boys in the class who took the test
The number of girls in the class who took the test


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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Re: The number of boys [#permalink] New post 15 Jun 2018, 05:43
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Carcass wrote:
Attachment:
test.jpg


Quantity A
Quantity B
The number of boys in the class who took the test
The number of girls in the class who took the test


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.


Let B for Boys and G for Girls.

Now AM = 90B + 81G = 84(B+G)

We finally get 2B = G i.e. G is twice of B.

G is greater.

B.

Last edited by msk0657 on 17 Jun 2018, 04:38, edited 1 time in total.
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Re: The number of boys [#permalink] New post 17 Jun 2018, 03:42
msk0657 wrote:
Carcass wrote:
Attachment:
test.jpg


Quantity A
Quantity B
The number of boys in the class who took the test
The number of girls in the class who took the test


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.


Let B for Boys and G for Girls.

Now AM = 90B + 81G = 84(B+G)

We finally get 2B = G i.e. G is twice of B.

G is greater.

B.
Re: The number of boys   [#permalink] 17 Jun 2018, 03:42
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