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If the average of three numbers is 3x and two of the number
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Updated on: 21 Mar 2019, 09:26
Updated on: 21 Mar 2019, 09:26
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Question Stats:
80% (00:49) correct
20% (01:30) wrong based on 40 sessions
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If the average of three numbers is \(3x\) and two of the numbers are \(2x – y\) and \(x + y\), what is the third number in terms of \(x\) and \(y\)?
A. x+y
B. x-y
C. 6x-2y
D. 9x
E. 6x
Kudos for right answer and explanation
Re: If the average of three numbers is 3x and two of the number
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24 Jan 2018, 03:08
24 Jan 2018, 03:08
1
(2x-y+x+y+C)/3=3
(3x+C)/3=3
On Substituting C=6x
9x/3==>3
Therefore 6x
(3x+C)/3=3
On Substituting C=6x
9x/3==>3
Therefore 6x
Re: If the average of three numbers is 3x and two of the number
[#permalink]
24 Jan 2019, 00:40
24 Jan 2019, 00:40
Expert Reply
sharmaapeksha960 wrote:
(2x-y+x+y+C)/3=3
(3x+C)/3=3
On Substituting C=6x
9x/3==>3
Therefore 6x
(3x+C)/3=3
On Substituting C=6x
9x/3==>3
Therefore 6x
This answer makes no sense.
(3x+c)/3=3
then 3x+c=9
where do you get 6x from?
