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The average (arithmetic mean) monthly income of four workers [#permalink]
25 Feb 2013, 09:09
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The average (arithmetic mean) monthly income of four workers is $2,200. After one worker’s income increases by 25 percent the new average income is $2,400. What was the original income of the worker whose monthly income increased?
A. $800 B. $1,200 C. $2,400 D. $3,200 E. It cannot be determined from the information given .
Re: The average (arithmetic mean) monthly income of four workers [#permalink]
26 Feb 2013, 01:44
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This post received KUDOS
Expert's post
thinktank wrote:
The average (arithmetic mean) monthly income of four workers is $2,200. After one worker’s income increases by 25 percent the new average income is $2,400. What was the original income of the worker whose monthly income increased?
A. $800 B. $1,200 C. $2,400 D. $3,200 E. It cannot be determined from the information given .
Increase in total income was 200*4=$800, we know that this increase was 25% (1/4th) of the workers original income, thus his/her original income was 800*4=$3,200.
Re: The average (arithmetic mean) monthly income of four workers [#permalink]
09 Apr 2014, 11:26
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The average (arithmetic mean) monthly income of four workers [#permalink]
14 Sep 2015, 02:33
Hello.
When the question refers to the "original income", it means before the increase of 25% or just the 100% after the increase? Why the question couldn't be like "What is the actual income of the worker who's income increased?" or something like that?
The question is correct, I thought that the monthly salary would be an integer and not something like 1886.67. So the original is 3200 and the increase would take it to 4000. All clear!
Best! _________________
"The stock market is filled with individuals who know the price of everything, but the value of nothing." - Philip Fisher
Re: The average (arithmetic mean) monthly income of four workers [#permalink]
14 Sep 2015, 03:39
snfuenza wrote:
Hello.
When the question refers to the "original income", it means before the increase of 25% or just the 100% after the increase? Why the question couldn't be like "What is the actual income of the worker who's income increased?" or something like that?
The question is correct, I thought that the monthly salary would be an integer and not something like 1886.67. So the original is 3200 and the increase would take it to 4000. All clear!
Best!
What do you mean by your text in red above?
The question is clear as stated. Lets say the worker was earning 100$ before the 25% increase. With 25% increase, his new salary will be come = 125$. Thus when I ask you the "original salary" it will always mean that I want you to say 100$ and not 125$. _________________
Re: The average (arithmetic mean) monthly income of four workers [#permalink]
14 Sep 2015, 09:07
Engr2012 wrote:
snfuenza wrote:
Hello.
When the question refers to the "original income", it means before the increase of 25% or just the 100% after the increase? Why the question couldn't be like "What is the actual income of the worker who's income increased?" or something like that?
The question is correct, I thought that the monthly salary would be an integer and not something like 1886.67. So the original is 3200 and the increase would take it to 4000. All clear!
Best!
What do you mean by your text in red above?
The question is clear as stated. Lets say the worker was earning 100$ before the 25% increase. With 25% increase, his new salary will be come = 125$. Thus when I ask you the "original salary" it will always mean that I want you to say 100$ and not 125$.
Sorry, yes, I got confused and now I understand it.
Thanks! _________________
"The stock market is filled with individuals who know the price of everything, but the value of nothing." - Philip Fisher
gmatclubot
Re: The average (arithmetic mean) monthly income of four workers
[#permalink]
14 Sep 2015, 09:07
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