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What is the average (arithmetic mean) of 1/2 and 1/4 ?

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Math Expert
Joined: 02 Sep 2009
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What is the average (arithmetic mean) of 1/2 and 1/4 ?  [#permalink]

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14 Jan 2019, 04:13
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Difficulty:

5% (low)

Question Stats:

96% (00:35) correct 4% (00:25) wrong based on 30 sessions

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What is the average (arithmetic mean) of 1/2 and 1/4 ?

A. 1/6

B. 1/3

C. 3/8

D. 5/9

E. 3/4

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Re: What is the average (arithmetic mean) of 1/2 and 1/4 ?  [#permalink]

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14 Jan 2019, 04:54
Bunuel wrote:
What is the average (arithmetic mean) of 1/2 and 1/4 ?

A. 1/6

B. 1/3

C. 3/8

D. 5/9

E. 3/4

1/2 + 1/4 = 3/4

3/4 * 1/2 = 3/8 IMO C
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Re: What is the average (arithmetic mean) of 1/2 and 1/4 ?  [#permalink]

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14 Jan 2019, 05:00
$$\frac{\frac{1}{2} + \frac{1}{4}}{2}$$

= $$\frac{3}{8}$$

OPTION: C
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Re: What is the average (arithmetic mean) of 1/2 and 1/4 ?  [#permalink]

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14 Jan 2019, 19:01
Bunuel wrote:
What is the average (arithmetic mean) of 1/2 and 1/4 ?

A. 1/6

B. 1/3

C. 3/8

D. 5/9

E. 3/4

We add the two numbers and divide the sum by 2:

(1/2 + 1/4)/2 = (2/4 + 1/4)/2 = (3/4)/2 = 3/8

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Re: What is the average (arithmetic mean) of 1/2 and 1/4 ?   [#permalink] 14 Jan 2019, 19:01
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