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help regarding DS question about averages

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help regarding DS question about averages

by daniyatom » Tue Nov 25, 2008 12:55 pm
Each employee on a certain task force is either a manager or a director. What percent of the employees on the task force are directors?

(I) The average (arith mean) salary of the managers on the task force is $5,000 less than the average salary of all the employees on the task force

(II) The average (arith mean) salary of the directors on the task force is $15,000 greater than the average salary of the all the employees on the task force

Please help.
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Source: — Data Sufficiency |
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by Stuart@KaplanGMAT » Tue Nov 25, 2008 1:07 pm
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