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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
Joined: 02 Sep 2009
Posts: 53006
If a + b = 11c, what is the average of a, b, and c, in terms of a and  [#permalink]

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24 Jan 2019, 23:15
00:00

Difficulty:

5% (low)

Question Stats:

93% (00:40) correct 7% (01:31) wrong based on 42 sessions

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

A 3c
B 3c + 1
C 4c
D 5c
E 5c − 1

_________________
VP
Joined: 31 Oct 2013
Posts: 1136
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)
Re: If a + b = 11c, what is the average of a, b, and c, in terms of a and  [#permalink]

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25 Jan 2019, 00:10
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

Director
Joined: 27 May 2012
Posts: 683
Re: If a + b = 11c, what is the average of a, b, and c, in terms of a and  [#permalink]

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03 Feb 2019, 01:31
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.
_________________

- Stne

Math Expert
Joined: 02 Sep 2009
Posts: 53006
Re: If a + b = 11c, what is the average of a, b, and c, in terms of a and  [#permalink]

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03 Feb 2019, 01:40
stne wrote:
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.

_______________
Edited. Thank you.
_________________
Re: If a + b = 11c, what is the average of a, b, and c, in terms of a and   [#permalink] 03 Feb 2019, 01:40
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