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GRE Prep Club Legend  Joined: 07 Jun 2014
Posts: 4857
GRE 1: Q167 V156 WE: Business Development (Energy and Utilities)
Followers: 105

Kudos [?]: 1782 , given: 397

In terms of y, what is the average (arithmetic mean) of 4y [#permalink]
Expert's post 00:00

Question Stats: 100% (00:08) correct 0% (00:00) wrong based on 6 sessions
In terms of y, what is the average (arithmetic mean) of 4y and 22 ?

A. 4y + 22
B. 4y + 11
C. 4y − 22
D. 2y + 11
E. 2y + 22

Drill 1
Question: 1
Page: 521
[Reveal] Spoiler: OA

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Sandy
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Director Joined: 20 Apr 2016
Posts: 826
WE: Engineering (Energy and Utilities)
Followers: 11

Kudos [?]: 603 , given: 124

Re: In terms of y, what is the average (arithmetic mean) of 4y [#permalink]
sandy wrote:
In terms of y, what is the average (arithmetic mean) of 4y and 22 ?

A. 4y + 22
B. 4y + 11
C. 4y − 22
D. 2y + 11
E. 2y + 22

Drill 1
Question: 1
Page: 521

Here the average of 4y and 22 = $$\frac{1}{2}$$ * (4y + 22) = 2y + 11
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GRE Prep Club Legend  Joined: 07 Jun 2014
Posts: 4857
GRE 1: Q167 V156 WE: Business Development (Energy and Utilities)
Followers: 105

Kudos [?]: 1782 , given: 397

Re: In terms of y, what is the average (arithmetic mean) of 4y [#permalink]
Expert's post
Explanation

To find the average, add up the values and divide by 2:
$$\frac{4y+22}{2}=\frac{2(2y +11)}{2}=2y +11$$.

You can also Plug In on this one. If y = 3, then $$\frac{4*3+22}{2}$$=17, your target number.

Only choice (D) hits the target.
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Sandy
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Try our free Online GRE Test Re: In terms of y, what is the average (arithmetic mean) of 4y   [#permalink] 09 Dec 2017, 19:39
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