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If the sum of 9 consecutive integers is 90, what is the sum of the fol

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If the sum of 9 consecutive integers is 90, what is the sum of the fol [#permalink]

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Re: If the sum of 9 consecutive integers is 90, what is the sum of the fol [#permalink]

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Bunuel wrote:
If the sum of 9 consecutive integers is 90, what is the sum of the following 9 consecutive integers?

A. 99
B. 135
C. 145
D. 171
E. 180


Ways to do it..
1) greatest of each will have a difference of 9 and next greatest too will have a difference of 9 and so on..
Therefore all nine terms will have a term MORE by 9..
Sum =90+(9*9)=171

2) if sum is 90, the average= median=90/9=10..The median of next 9 will be 10+9=19..
And ssum would be 19*9=171

D
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Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html


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Re: If the sum of 9 consecutive integers is 90, what is the sum of the fol [#permalink]

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New post 29 Jan 2018, 01:03
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Re: If the sum of 9 consecutive integers is 90, what is the sum of the fol   [#permalink] 29 Jan 2018, 01:03
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