Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized for You
we will pick new questions that match your level based on your Timer History
Track Your Progress
every week, we’ll send you an estimated GMAT score based on your performance
Practice Pays
we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
What people who reach the high 700's do differently? We're going to share insights, tips, and strategies from data we collected on over 50,000 students who used examPAL. Save your spot today!
Join the Live Chat April 24th at 8 am PT. Learn the best strategies for acing the Verbal section. From Sentence Correction tactics to 3 keys for solving Reading Comprehension questions and tips for Critical Reasoning questions.
Join an exclusive workshop for GMAT Club members and learn how to cut your preparation time by 50% and still reach a 700+ on the GMAT. Limited for the first 99 registrants. Register today!
Learn the best strategies for acing the Verbal section. From Sentence Correction tactics to 3 keys for solving Reading Comprehension questions and tips for Critical Reasoning questions. Video Premiere April 23rd at 8am PT
Re: If a, b, and c are three different numbers and x/(b - c) = y/(c - a) =
[#permalink]
Show Tags
07 Apr 2019, 22:28
From given equation we know that a, b, c can't be equal so, Let a=1,b=2,c=3, Then the given equation will become x=-y/2=z Now put all the values of a, b, c in ax+by+cz =x+2y+3z Now as x=-y/2=z The equation will become =-y/2+2y-3y/2 =0
Why are we sure that we can substitute the values with any number?
Kind regards!
as no. of equations is less than no. of variables and if the equation is correct with one or more solution then we can take any value of a,b,c provided they are not equal, these values have to satisfy the equation.
gmatclubot
Re: If a, b, and c are three different numbers and x/(b - c) = y/(c - a) =
[#permalink]
18 Apr 2019, 18:12
close
91% (01:40) correct 
