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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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New post 28 Sep 2016, 01:56
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A
B
C
D
E

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  35% (medium)

Question Stats:

80% (02:18) correct 20% (02:33) wrong based on 120 sessions

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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 28 Sep 2016, 02:08
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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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1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.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 &nbs [#permalink] 29 Jan 2018, 01:03
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If the sum of 9 consecutive integers is 90, what is the sum of the fol

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