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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 ## If Nicole worked 20% more this week than she worked last tagged by: BTGmoderatorLU ##### This topic has 1 expert reply and 0 member replies ### Top Member ## If Nicole worked 20% more this week than she worked last ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult Source: Manhattan Prep If Nicole worked 20% more this week than she worked last week, how many hours did she work last week? 1) Nicole worked 36 hours this week. 2) Nicole worked 6 more hours this week than she worked last week. The OA is D. ### GMAT/MBA Expert GMAT Instructor Joined 09 Oct 2010 Posted: 870 messages Followed by: 27 members Upvotes: 59 BTGmoderatorLU wrote: Source: Manhattan Prep If Nicole worked 20% more this week than she worked last week, how many hours did she work last week? 1) Nicole worked 36 hours this week. 2) Nicole worked 6 more hours this week than she worked last week. $${\rm{this}}\,\, = \,\,{\rm{\# }}\,\,{\rm{h}}\,\,{\rm{Nicole}}\,\,{\rm{worked}}\,\,{\rm{this}}\,\,{\rm{week}}$$ $${\rm{last}}\,\, = \,\,{\rm{\# }}\,\,{\rm{h}}\,\,{\rm{Nicole}}\,\,{\rm{worked}}\,\,{\rm{last}}\,\,{\rm{week}}$$ $${\rm{this}}\,\,{\rm{ = }}\,\,{6 \over 5}\left( {{\rm{last}}} \right)\,\,\,\,\,\left( * \right)\,$$ $$? = {\rm{last}}$$ $$\left( 1 \right)\,\,{\rm{this}} = 36\,\,\mathop = \limits^{\left( * \right)} \,\,{6 \over 5}\left( {{\rm{last}}} \right)\,\,\,\,\, \Rightarrow \,\,\,\,\,? = {5 \over 6}\left( {36} \right)\,\,\,\, \Rightarrow \,\,\,\,{\rm{SUFF}}{\rm{.}}$$ $$\left( 2 \right)\,\,{\rm{this}} - {\rm{last}} = 6\,\,\,\left[ {\rm{h}} \right]\,\,\,\,\,\,\mathop \Rightarrow \limits^{\left( * \right)} \,\,\,\,\,{6 \over 5}\left( {{\rm{last}}} \right) - {\rm{last}} = {1 \over 5}\left( {{\rm{last}}} \right) = {\rm{6}}\,\,\,\,\, \Rightarrow \,\,\,\,\,? = 5 \cdot 6\,\,\,\, \Rightarrow \,\,\,\,\,{\rm{SUFF}}{\rm{.}}$$ This solution follows the notations and rationale taught in the GMATH method. Regards, Fabio. _________________ Fabio Skilnik :: https://GMATH.net (Math for the GMAT) or https://GMATH.com.br (Portuguese version) Course release PROMO : finish our test drive till 30/Nov with (at least) 50 correct answers out of 92 (12-questions Mock included) to gain a 50% discount! • Get 300+ Practice Questions 25 Video lessons and 6 Webinars for FREE Available with Beat the GMAT members only code • Award-winning private GMAT tutoring Register now and save up to$200

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