Oct 22 08:00 AM PDT - 09:00 AM PDT Join to learn strategies for tackling the longest, wordiest examples of Counting, Sets, & Series GMAT questions Oct 22 09:00 AM PDT - 10:00 AM PDT Watch & learn the Do's and Don’ts for your upcoming interview Oct 22 08:00 PM PDT - 09:00 PM PDT On Demand for $79. For a score of 49-51 (from current actual score of 40+) All-In-One Standard & 700+ Level Questions (150 questions) Oct 23 08:00 AM PDT - 09:00 AM PDT Join an exclusive interview with the people behind the test. If you're taking the GMAT, this is a webinar you cannot afford to miss! Oct 26 07:00 AM PDT - 09:00 AM PDT Want to score 90 percentile or higher on GMAT CR? Attend this free webinar to learn how to pre-think assumptions and solve the most challenging questions in less than 2 minutes. Oct 27 07:00 AM EDT - 09:00 AM PDT Exclusive offer! Get 400+ Practice Questions, 25 Video lessons and 6+ Webinars for FREE.
|
Author |
Message |
|
TAGS:
|
|
|
Intern
Joined: 22 May 2016
Posts: 9
|
Average of x and 2y
[#permalink]
Show Tags
 28 Jan 2019, 20:00
It is a conceptual question:
If the question says that average of x and 2y is 10, does this mean:
Option#1. (x + 2y)/2 = 10
OR
Option#2. (x + 2y)/3 = 10
This concept is used in OGQR 18 Q194. The solution uses Option#1. However, I believe it should be Option#2 because we have three terms: x,y, and y.
i.e. the above equation can be re-written as (x+y+y)/3 = 10.
|
|
|
|
|
|
Intern
Joined: 17 Jan 2019
Posts: 6
|
Re: Average of x and 2y
[#permalink]
Show Tags
28 Jan 2019, 20:36
So in culculating the average height of two guys of 160cm and 170cm, will you claim
“Hey, a 170cm guy is equivalent to two 85cm kids, so let’s rip this guy in half and make it (160+85+85)/3=110cm!” or simply calculate “(160+170)/2=165cm”?
Don’t arbitrarily devide “2y” into two “y”s.
Devide the total by the number of items.
Posted from my mobile device
|
|
|
|
|
|
|
Re: Average of x and 2y
[#permalink]
28 Jan 2019, 20:36
|
|
|
|
|
|
|
|
|
|
|
close
