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The sum of the weekly salaries of 5 employees is $3,250. If each of th

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The sum of the weekly salaries of 5 employees is $3,250. If each of the 5 salaries is to increase by 10 percent, then the average (arithmetic mean) weekly salary per employee will increase by

A. $52.50
B. $55.00
C. $57.50
D. $62.50
E. $65.00
[Reveal] Spoiler: OA

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Re: The sum of the weekly salaries of 5 employees is $3,250. If each of th [#permalink]

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AbdurRakib wrote:
The sum of the weekly salaries of 5 employees is $3,250. If each of the 5 salaries is to increase by 10 percent, then the average (arithmetic mean) weekly salary per employee will increase by

A. $52.50
B. $55.00
C. $57.50
D. $62.50
E. $65.00


Average = Sum / Total number

Average = \(\frac{3250}{5}= $650\)

Each of the 5 salaries increases by 10%, then the average will also increase by 10%.

Therefore, 10% of 650 = \(\frac{10}{100}* 650 = $65\)

Average weekly salary per employee will increase by \(= $65.00\). Answer (E)...


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Re: The sum of the weekly salaries of 5 employees is $3,250. If each of th [#permalink]

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AbdurRakib wrote:
The sum of the weekly salaries of 5 employees is $3,250. If each of the 5 salaries is to increase by 10 percent, then the average (arithmetic mean) weekly salary per employee will increase by

A. $52.50
B. $55.00
C. $57.50
D. $62.50
E. $65.00


To make things easier, let's say that all 5 employees have the SAME weekly salary.

The sum of the weekly salaries of 5 employees is $3,250
$3250/5 = $650
So, each employee earns $650/month

If each of the 5 salaries is to increase by 10 percent...
10% of $650 = $65
So, each employee's weekly salary will increase by $65

Answer:
[Reveal] Spoiler:
E


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Re: The sum of the weekly salaries of 5 employees is $3,250. If each of th [#permalink]

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New post 07 Aug 2017, 10:52
AbdurRakib wrote:
The sum of the weekly salaries of 5 employees is $3,250. If each of the 5 salaries is to increase by 10 percent, then the average (arithmetic mean) weekly salary per employee will increase by

A. $52.50
B. $55.00
C. $57.50
D. $62.50
E. $65.00


\(\frac{Sum}{Total Number}\) = Average
=> Average = \(\frac{3250}{5}\) = 650

10% of 650 = 65

E is the answer
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Re: The sum of the weekly salaries of 5 employees is $3,250. If each of th   [#permalink] 07 Aug 2017, 10:52
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