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# If x and z are positive integers and x + z = 13 what is the ratio of x

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Math Expert
Joined: 02 Sep 2009
Posts: 58427
If x and z are positive integers and x + z = 13 what is the ratio of x  [#permalink]

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10 Oct 2019, 01:50
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Difficulty:

45% (medium)

Question Stats:

62% (01:22) correct 38% (01:00) wrong based on 13 sessions

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If x and z are positive integers and x + z = 13 what is the ratio of x to z?

(1) xz = 40
(2) z > 2

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Intern
Joined: 14 Sep 2019
Posts: 3
Re: If x and z are positive integers and x + z = 13 what is the ratio of x  [#permalink]

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10 Oct 2019, 07:38
Ans - E
(1) xy=40
only possible combination is 8 and 5. but cant infer which one is x and z
so insufficient
(2)z greater than 2
both 8 and 5 are greater than 2
so insufficient

both together insufficient
Hence E
Re: If x and z are positive integers and x + z = 13 what is the ratio of x   [#permalink] 10 Oct 2019, 07:38
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