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What is the average (arithmetic mean) annual salary of the 6 employees

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What is the average (arithmetic mean) annual salary of the 6 employees  [#permalink]

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New post 03 Aug 2018, 10:13
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A
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E

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Question Stats:

53% (01:07) correct 47% (01:06) wrong based on 426 sessions

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What is the average (arithmetic mean) annual salary of the 6 employees of a toy company?

(1) If the 6 annual salaries were ordered from least to greatest, each annual salary would be $6,300 greater than the preceding annual salary.
(2) The range of the 6 annual salaries is $31,500.


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(DS03615)

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What is the average (arithmetic mean) annual salary of the 6 employees  [#permalink]

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New post Updated on: 03 Aug 2018, 10:30
1
1. We don't know individual values. So insufficient.

2. We know only the ranges. Value can be anything. So insufficient

1+2 salaries are 0,6300,12600,18900,25200,31500

6300,12600,18900,25200,31500,37800

So any values possible. So insufficient

Hence E

Originally posted by ashisplb on 03 Aug 2018, 10:20.
Last edited by ashisplb on 03 Aug 2018, 10:30, edited 1 time in total.
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What is the average (arithmetic mean) annual salary of the 6 employees  [#permalink]

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New post Updated on: 03 Aug 2018, 10:59
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ashisplb wrote:
1. We don't know individual values. So insufficient.

2. We know only the ranges. Value can be anything. So insufficient

1+2 salaries are 0,6300,12600,18900,25200,31500

Hence C

Posted from my mobile device

ashisplb why would anyone do a job for zero salary ?
In fact it could be any value for the least paid and the increment of 6300 then on
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Originally posted by sudarshan22 on 03 Aug 2018, 10:24.
Last edited by sudarshan22 on 03 Aug 2018, 10:59, edited 1 time in total.
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Re: What is the average (arithmetic mean) annual salary of the 6 employees  [#permalink]

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New post 03 Aug 2018, 10:34
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Bunuel wrote:
What is the average (arithmetic mean) annual salary of the 6 employees of a toy company?


(1) If the 6 annual salaries were ordered from least to greatest, each annual salary would be $6,300 greater than the preceding annual salary.
x, x + 6300, x + 2 * 6300, x + 3 * 6300, x + 4* 6300, x + 5 * 6300
Avg = ( x + ( x + 5 * 6300 )) / 2
= ( 2x + 5 * 6300 ) / 2
No information about x
Insufficient

(2) The range of the 6 annual salaries is $31,500.
No information about individual salary
Insufficient

Combining both :
No new information, St 2) can be derived from St 1) itself
Insufficient

Hence, E.
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Re: What is the average (arithmetic mean) annual salary of the 6 employees  [#permalink]

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New post 04 Aug 2018, 05:25
sudarshan22 wrote:
ashisplb wrote:
1. We don't know individual values. So insufficient.

2. We know only the ranges. Value can be anything. So insufficient

1+2 salaries are 0,6300,12600,18900,25200,31500

Hence C

Posted from my mobile device

ashisplb why would anyone do a job for zero salary ?
In fact it could be any value for the least paid and the increment of 6300 then on


Hey sudarshan22,
I liked your thought process.
Why would anyone will do a job with no salary?

ashisplb - jokes apart. Good explanation.
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Re: What is the average (arithmetic mean) annual salary of the 6 employees  [#permalink]

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New post 04 Aug 2018, 05:37
jackspire wrote:
Hey sudarshan22,
I liked your thought process.
Why would anyone will do a job with no salary?

ashisplb - jokes apart. Good explanation.

jackspire
SC alert : The above highlighted sentence is incorrect as per SC standards though, "would" and "will" together - Duhhhh :dazed

Jokes apart, Thanks much. :grin: :thumbup:
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Re: What is the average (arithmetic mean) annual salary of the 6 employees  [#permalink]

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New post 05 Aug 2018, 22:36
sudarshan22 wrote:
jackspire wrote:
Hey sudarshan22,
I liked your thought process.
Why would anyone will do a job with no salary?

ashisplb - jokes apart. Good explanation.

jackspire
SC alert : The above highlighted sentence is incorrect as per SC standards though, "would" and "will" together - Duhhhh :dazed

Jokes apart, Thanks much. :grin: :thumbup:


Hey sudarshan22,
Thanks for the correction. ;)
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Re: What is the average (arithmetic mean) annual salary of the 6 employees  [#permalink]

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New post 17 Aug 2018, 07:09
Hi,

Stmt1 : Lets say we try to find the salary of six emp. Then it can be calculated by X(n)=X(n-1)+ 6300
So the sixth salary will be X(6)=X(1)+5(6300)
or X(6)-X(1)= 31,500
Insufficient.

Since 1 and 2 are both the same statements, So choice E

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Re: What is the average (arithmetic mean) annual salary of the 6 employees  [#permalink]

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New post 22 Oct 2018, 11:57
Bunuel wrote:
What is the average (arithmetic mean) annual salary of the 6 employees of a toy company?

(1) If the 6 annual salaries were ordered from least to greatest, each annual salary would be $6,300 greater than the preceding annual salary.
(2) The range of the 6 annual salaries is $31,500.


NEW question from GMAT® Quantitative Review 2019


(DS03615)


The average = Sum of salaries/6

Let first salary be x

The next salary will be x + 6,300 and so it goes to the 6th salary that equals x + 6,300*5

We have one variable that we don't know

Insufficient.

Statement 2)

Tells us the range X6 - X1 = 31,500

So we don't have anything specific about the salaries. Insufficient.

Now combine

The range is basically X6 - X1 = x + 6,300 *5 - x = 31,500

Basically tautology.

We don't know the value of x.

Insufficient.

Answer choice E
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Re: What is the average (arithmetic mean) annual salary of the 6 employees &nbs [#permalink] 22 Oct 2018, 11:57
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