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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 ## Last year the range of the annual salaries of the 100 tagged by: BTGmoderatorLU ##### This topic has 2 expert replies and 0 member replies ### Top Member ## Last year the range of the annual salaries of the 100 ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult Source: GMAT Prep Last year the range of the annual salaries of the 100 employees at Company X was$30,000. If the annual salary of each of the 100 employees this year is 10 percent greater than it was last year, what is the range of the annual salaries of the 100 employees this year?

A. $27,000 B.$30,000
C. $33,000 D.$36,000
E. $63,000 The OA is C ### GMAT/MBA Expert GMAT Instructor Joined 08 Dec 2008 Posted: 12827 messages Followed by: 1247 members Upvotes: 5254 GMAT Score: 770 BTGmoderatorLU wrote: Source: GMAT Prep Last year the range of the annual salaries of the 100 employees at Company X was$30,000. If the annual salary of each of the 100 employees this year is 10 percent greater than it was last year, what is the range of the annual salaries of the 100 employees this year?

A. $27,000 B.$30,000
C. $33,000 D.$36,000
E. $63,000 A quick solution is to assign some values to the highest paid and lowest paid workers Let$10,000 = the lowest salary LAST YEAR
Let $40,000 = the highest salary LAST YEAR This satisfies the condition that the range LAST YEAR =$30,000

If the annual salary of each of the 100 employees this year is 10 percent greater than it was last year, . . .
(1.1)($10,000) =$11,000, so the lowest salary is NOW $11,000 (1.1)($40,000) =$44,000, so the lowest salary is NOW$44,000

. . . what is the range of the annual salaries of the 100 employees this year?
Range = $44,000 -$11,000 = $33,000 Answer: C A faster solution is to recognize that if EACH PERSON gets a 10% increase, then the range will increase by 10% So, the$30,000 range increases by 10% to $33,000 Cheers, Brent _________________ Brent Hanneson â€“ Creator of GMATPrepNow.com Use our video course along with Sign up for our free Question of the Day emails And check out all of our free resources GMAT Prep Now's comprehensive video course can be used in conjunction with Beat The GMATâ€™s FREE 60-Day Study Guide and reach your target score in 2 months! ### GMAT/MBA Expert GMAT Instructor Joined 25 Apr 2015 Posted: 2424 messages Followed by: 18 members Upvotes: 43 BTGmoderatorLU wrote: Source: GMAT Prep Last year the range of the annual salaries of the 100 employees at Company X was$30,000. If the annual salary of each of the 100 employees this year is 10 percent greater than it was last year, what is the range of the annual salaries of the 100 employees this year?

A. $27,000 B.$30,000
C. $33,000 D.$36,000
E. $63,000 The OA is C We can let the lowest salary from last year = 10,000 and the highest = 40,000. (Note that we could use any two values, as long as their difference is$30,000.)

Thus, the new low is 1.1 x 10,000 = 11,000 and the new high is 40,000 x 1.1 = 44,000.

So the new range is 44,000 - 11,000 = 33,000.

_________________

Scott Woodbury-Stewart
Founder and CEO
scott@targettestprep.com

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