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If a + b = 11c, what is the average of a, b, and c, in terms of a and

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Math Expert
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Joined: 02 Sep 2009
Posts: 58396
If a + b = 11c, what is the average of a, b, and c, in terms of a and  [#permalink]

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New post 25 Jan 2019, 00:15
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

94% (00:39) correct 6% (01:31) wrong based on 47 sessions

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VP
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Joined: 31 Oct 2013
Posts: 1467
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)
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Re: If a + b = 11c, what is the average of a, b, and c, in terms of a and  [#permalink]

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New post 25 Jan 2019, 01:10
1
Bunuel wrote:
If a + b = 11c, what is the average of a, b, and c, in terms of a and b?

A 3c
B 3c + 1
C 4c
D 5c
E 5c − 1



Average:

= \(\frac{a + b + c}{3}\)

=\(\frac{11c + c}{3}\)

=\(\frac{12c}{3}\)

= 4c

C is the correct answer.
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Joined: 27 May 2012
Posts: 903
Re: If a + b = 11c, what is the average of a, b, and c, in terms of a and  [#permalink]

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New post 03 Feb 2019, 02:31
1
Bunuel wrote:
If a + b = 11c, what is the average of a, b, and c, in terms of a and b?

A 3c
B 3c + 1
C 4c
D 5c
E 5c − 1


Dear Moderator ,
Seems there is a small typo above, instead of " in terms of a and b" it should be " in terms of c".
Hope you will do the needful. Thank you.
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Math Expert
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Joined: 02 Sep 2009
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Re: If a + b = 11c, what is the average of a, b, and c, in terms of a and  [#permalink]

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New post 03 Feb 2019, 02:40
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Re: If a + b = 11c, what is the average of a, b, and c, in terms of a and   [#permalink] 03 Feb 2019, 02:40
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