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DS - From GMATlife practice test

by scoowhoop » Thu Mar 25, 2010 8:17 pm
In an office that employees 120 people, m% of the employees are male, and c% of the employees are members of the custodial staff. How many employees are females who are not members of the custodial staff?

1) m + c = 50

2) The number of female employees who are members of the custodial staff is four.

ANS: ...E...
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by rockeyb » Thu Mar 25, 2010 9:36 pm
scoowhoop wrote:In an office that employees 120 people, m% of the employees are male, and c% of the employees are members of the custodial staff. How many employees are females who are not members of the custodial staff?

1) m + c = 50

2) The number of female employees who are members of the custodial staff is four.

ANS: ...E...

Total employees = 120 .

We need to find 'm ' and 'c' ?


Statement (1)

m + c = 50 .

Now m could be = 25 and c= 25 .

Or m = 20 and c = 30 .

Not really sure what the distribution is .

Insufficient .

Statement (2)

No of females who are members of the custodial staff = 4 .

But we dont know what the total no of females is .

Not sufficient.

Combine (1) and (2)

Still we dont know what 'm' and 'c' are .


Ans E.
"Know thyself" and "Nothing in excess"
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