Increasing a Percent

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A company has 400 employees, 20 percent of whom have 5 or more years of work experience. If 40 additional employees are to be hired and all of the present employees remain, how many of the additional employees must have 5 or more years of work experience in order to raise the percent of employees with 5 or more years of work experience to 25 percent?

Review: Increasing a Percent


Explanation

The algebra would not be too fearsome here, but the answer choices are nice square numbers virtually begging to be plugged into the question. We know 20% of 400 employees have this level of experience, so that's 80. We're going to hire 40 people, and x of them will have this experience, so



Therefore, x must be 30, to bring the numerator to 110 or of 440.

The correct answer is (E).


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