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Help me PLS understand this question!

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Intern
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Joined: 13 Sep 2019
Posts: 9
Help me PLS understand this question!  [#permalink]

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New post 24 Nov 2019, 17:02
On Monday, a person mailed 8 packages weighing an average (arithmetic mean) of pounds, and on Tuesday, 4 packages weighing an average of pounds. What was the average weight, in pounds, of all the packages the person mailed on both days?

(A) 13 1/3

(B) 13 13/16

(C) 15 1/2

(D) 15 15/16

(E) 16 1/2

I could find the result of entire number but I still don’t get where this fraction come from!
I have to use the weighted average calculation right?

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Director
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Re: Help me PLS understand this question!  [#permalink]

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New post 24 Nov 2019, 17:11
Discussed here:
https://gmatclub.com/forum/on-monday-a- ... l#p1112587

Please search before posting. Most likely, the question is already present on the forum

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Re: Help me PLS understand this question!   [#permalink] 24 Nov 2019, 17:11
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