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Which of the following is one-third of the reciprocal of the 1/3 + 8/7

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Math Expert
Joined: 02 Sep 2009
Posts: 58453
Which of the following is one-third of the reciprocal of the 1/3 + 8/7  [#permalink]

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10 Jan 2018, 23:30
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Difficulty:

25% (medium)

Question Stats:

74% (00:58) correct 26% (00:59) wrong based on 42 sessions

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Which of the following is one-third of the reciprocal of the 1/3 + 8/7 ?

A. 7/31

B. 7/15

C. 8/21

D. 21/31

E. 31/21

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Joined: 16 Apr 2017
Posts: 12
Re: Which of the following is one-third of the reciprocal of the 1/3 + 8/7  [#permalink]

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11 Jan 2018, 00:36
1/3 + 8/7= 31/21
Reciprocal= 21/31
One third of reciprocal = 7/31
Ans: A

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Re: Which of the following is one-third of the reciprocal of the 1/3 + 8/7   [#permalink] 11 Jan 2018, 00:36
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Which of the following is one-third of the reciprocal of the 1/3 + 8/7

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