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100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote ## A company has 400 employees, 20 percent of whom have 5... tagged by: AAPL ##### This topic has 2 expert replies and 0 member replies ### Top Member ## A company has 400 employees, 20 percent of whom have 5... 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 percentage of employees with 5 or more years of work experience to 25 percent? A. 10 B. 15 C. 20 D. 25 E. 30 The OA is E. It can be solve as follow, 20% of 400 is 0.2 * 400 = 80 employees with 5 or more exp. If that company hires 40 new employees, the total employees are 440. 25% of 440 is 0.25 * 440 = 110 employees with 5 or more exp. The additional employees with 5 or more exp are: 110 - 80 = 30, right? Is there another strategic approach to this question? Can any experts help? ### GMAT/MBA Expert Senior | Next Rank: 100 Posts Joined 16 Dec 2014 Posted: 94 messages Followed by: 4 members Upvotes: 2 GMAT Score: 770 AAPL wrote: 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 percentage of employees with 5 or more years of work experience to 25 percent? A. 10 B. 15 C. 20 D. 25 E. 30 The OA is E. It can be solve as follow, 20% of 400 is 0.2 * 400 = 80 employees with 5 or more exp. If that company hires 40 new employees, the total employees are 440. 25% of 440 is 0.25 * 440 = 110 employees with 5 or more exp. The additional employees with 5 or more exp are: 110 - 80 = 30, right? Is there another strategic approach to this question? Can any experts help? I would solve it the way you did it --> simple, clean, logical. If you want another approach you could do it with weighted averages: 20*(10/11) + x(1/11) = 25 200 + x = 275 x = 75 So 75% of the 40 people need to have 5 years or more work experience. ### GMAT/MBA Expert GMAT Instructor Joined 09 Apr 2015 Posted: 1461 messages Followed by: 17 members Upvotes: 39 AAPL wrote: 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 percentage of employees with 5 or more years of work experience to 25 percent? A. 10 B. 15 C. 20 D. 25 E. 30 We are given that a company has 400 employees and that 0.2 x 400 = 80 employees have 5 or more years of work experience. We need to determine, if 40 more employees were hired, how many of those employees would need to 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. We can create the following equation in which x = the number of additional employees who have 5 or more years of work experience: (80 + x)/(400 + 40) = 25/100 (80 + x)/440 = 1/4 4(80 + x) = 440 80 + x = 110 x = 30 Answer: E _________________ Jeffrey Miller Head of GMAT Instruction • Award-winning private GMAT tutoring Register now and save up to$200

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