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If Xavier and Zara together have 13 pencils, what is the ratio of the

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If Xavier and Zara together have 13 pencils, what is the ratio of the  [#permalink]

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New post 10 Oct 2019, 01:56
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

73% (01:26) correct 27% (01:22) wrong based on 22 sessions

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Re: If Xavier and Zara together have 13 pencils, what is the ratio of the  [#permalink]

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New post 10 Oct 2019, 02:53
Bunuel
https://gmatclub.com/forum/if-x-and-z-a ... s#p2377977

Aren't these questions basically same?

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Re: If Xavier and Zara together have 13 pencils, what is the ratio of the  [#permalink]

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New post 11 Oct 2019, 07:13
Bunuel wrote:
If Xavier and Zara together have 13 pencils, what is the ratio of the number of Xavier's pencils to Zara's pencils?

(1) The product of the number of pencils Xavier and Zara have is 40.
(2) Zara has more than 6 pencils.


X + Z = 13

(1) The product of the number of pencils Xavier and Zara have is 40.
X*Z = 40
Two cases (X, Z) = (8, 5) or (5, 8)
—> 2 ratios are possible —> Insufficient

(2) Zara has more than 6 pencils
—> Insufficient

Combining (1) & (2),
(X, Z) = (5, 8)
—> Required Ratio = X:Z = 5:8 —> Sufficient

IMO Option C

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Re: If Xavier and Zara together have 13 pencils, what is the ratio of the   [#permalink] 11 Oct 2019, 07:13
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