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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: 1449 messages Followed by: 32 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 :: GMATH method creator ( Math for the GMAT) English-speakers :: https://www.gmath.net Portuguese-speakers :: https://www.gmath.com.br • Free Practice Test & Review How would you score if you took the GMAT Available with Beat the GMAT members only code • Get 300+ Practice Questions 25 Video lessons and 6 Webinars for FREE Available with Beat the GMAT members only code • Free Trial & Practice Exam BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • 5 Day FREE Trial Study Smarter, Not Harder Available with Beat the GMAT members only code • Award-winning private GMAT tutoring Register now and save up to$200

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