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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 ## $$\frac{\left(3^{-1}+4^{-1}\right)^{-2}}{\frac{4^2}{7^2}}=$$ tagged by: Gmat_mission ##### This topic has 1 expert reply and 0 member replies ### Top Member ## $$\frac{\left(3^{-1}+4^{-1}\right)^{-2}}{\frac{4^2}{7^2}}=$$ ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult $$\frac{\left(3^{-1}+4^{-1}\right)^{-2}}{\frac{4^2}{7^2}}=$$ A. $$\frac{12}{9}$$ B. $$\frac{49}{144}$$ C. $$\frac{12}{7}$$ D. $$7$$ E. $$9$$ OA=E Source: Veritas Prep ### GMAT/MBA Expert GMAT Instructor Joined 25 Apr 2015 Posted: 2624 messages Followed by: 18 members Upvotes: 43 Gmat_mission wrote: $$\frac{\left(3^{-1}+4^{-1}\right)^{-2}}{\frac{4^2}{7^2}}=$$ A. $$\frac{12}{9}$$ B. $$\frac{49}{144}$$ C. $$\frac{12}{7}$$ D. $$7$$ E. $$9$$ OA=E Source: Veritas Prep Simplifying the numerator we have: (1/3 + 1/4)^-2 (4/12 + 3/12)^-2 (7/12)^-2 = (12/7)^2 = 12^2/7^2 Now we have: (12^2/7^2)/(4^2/7^2) 12^2/4^2 = (12/4)^2 = 9 Answer: E _________________ Scott Woodbury-Stewart Founder and CEO scott@targettestprep.com See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews • 5-Day Free Trial 5-day free, full-access trial TTP Quant Available with Beat the GMAT members only code • Award-winning private GMAT tutoring Register now and save up to$200

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