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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 ##### This topic has expert replies Moderator Posts: 1250 Joined: 15 Oct 2017 Followed by:5 members ### Last year the range of the annual salaries of the 100 by BTGmoderatorLU » Thu Feb 21, 2019 2:27 pm ## 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 Posts: 13525 Joined: 08 Dec 2008 Location: Vancouver, BC Thanked: 5254 times Followed by:1256 members GMAT Score:770 by Brent@GMATPrepNow » Thu Feb 21, 2019 3:01 pm 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 - Creator of GMATPrepNow.com Use my video course along with Beat The GMAT's free 60-Day Study Guide Sign up for free Question of the Day emails And check out all of these free resources ### GMAT/MBA Expert GMAT Instructor Posts: 3997 Joined: 25 Apr 2015 Location: Los Angeles, CA Thanked: 43 times Followed by:20 members by Scott@TargetTestPrep » Sun Feb 24, 2019 5:33 am 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.