GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 21 Oct 2019, 23:40

### GMAT Club Daily Prep

#### 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

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

# Average of x and 2y

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:

### Hide 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
Display posts from previous: Sort by

# Average of x and 2y

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne