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Math Expert V
Joined: 02 Sep 2009
Posts: 58396
If the average (arithmetic mean) of two numbers is 35 and one of the  [#permalink]

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Difficulty:   15% (low)

Question Stats: 89% (00:29) correct 11% (00:45) wrong based on 28 sessions

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If the average (arithmetic mean) of two numbers is 35 and one of the numbers is k, then what is the other number, in terms of k ?

A. 35 + k
B. 35 – k
C. 35 − 2k
D. 70 – k
E. 70 − 2k

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Re: If the average (arithmetic mean) of two numbers is 35 and one of the  [#permalink]

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Bunuel wrote:
If the average (arithmetic mean) of two numbers is 35 and one of the numbers is k, then what is the other number, in terms of k ?

A. 35 + k
B. 35 – k
C. 35 − 2k
D. 70 – k
E. 70 − 2k

a+k=70
a=70-k
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Joined: 31 Oct 2013
Posts: 1467
Concentration: Accounting, Finance
GPA: 3.68
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Re: If the average (arithmetic mean) of two numbers is 35 and one of the  [#permalink]

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Bunuel wrote:
If the average (arithmetic mean) of two numbers is 35 and one of the numbers is k, then what is the other number, in terms of k ?

A. 35 + k
B. 35 – k
C. 35 − 2k
D. 70 – k
E. 70 − 2k

Sum of 2 numbers = 35*2 = 70.

One number is K.

other number = 70 - k.

D is the correct answer.
Intern  B
Joined: 15 Dec 2018
Posts: 10
Concentration: Finance
Re: If the average (arithmetic mean) of two numbers is 35 and one of the  [#permalink]

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I said D as well but apparently that’s wrong. I hate this “in terms of” stuff

Posted from my mobile device

Originally posted by NonB4taxMBAib on 28 Feb 2019, 12:42.
Last edited by NonB4taxMBAib on 28 Feb 2019, 12:53, edited 1 time in total.
Director  V
Joined: 27 May 2012
Posts: 903
Re: If the average (arithmetic mean) of two numbers is 35 and one of the  [#permalink]

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Bunuel wrote:
If the average (arithmetic mean) of two numbers is 35 and one of the numbers is k, then what is the other number, in terms of k ?

A. 35 + k
B. 35 – k
C. 35 − 2k
D. 70 – k
E. 70 − 2k

If the average of 2 numbers is 35, then the total of those 2 numbers is 70. if one of those numbers is K then the other should be 70-k. The answer seems to be D.

Hope moderator will provide the explanation for E or change the OA to D.
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Re: If the average (arithmetic mean) of two numbers is 35 and one of the  [#permalink]

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Bunuel wrote:
If the average (arithmetic mean) of two numbers is 35 and one of the numbers is k, then what is the other number, in terms of k ?

A. 35 + k
B. 35 – k
C. 35 − 2k
D. 70 – k
E. 70 − 2k

Let n = the other number. We can create the equation:

(n + k)/2 = 35

n + k = 70

n = 70 - k

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If you find one of my posts helpful, please take a moment to click on the "Kudos" button. Re: If the average (arithmetic mean) of two numbers is 35 and one of the   [#permalink] 04 Mar 2019, 20:12
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