BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Number line

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
Master | Next Rank: 500 Posts
Posts: 392
Joined: Thu Jan 15, 2009 12:52 pm
Location: New Jersey
Thanked: 76 times

by truplayer256 » Thu Aug 06, 2009 3:55 pm
Average of points R,S, and T= R+S+T/3

But since the answer choices are in terms of r,s,t where r is the absolute value of r, s is the absolute value of s, and t is the absolute value of t, we have to keep in mind that point R is really negative and the absolute value of it will make it positive. So, when taking averages we have to do s+t-r/3, if we did, s+t+r/3, we'd be wrong since we're considering point R to be positive when it's really not.
Top
Legendary Member
Posts: 882
Joined: Fri Feb 20, 2009 2:57 pm
Thanked: 15 times
Followed by:1 members
GMAT Score:690

by crackgmat007 » Fri Aug 07, 2009 7:42 pm
Question is asking which of the values equals average of R, S, & T.

R = -3
S = 2
T = 4

Average = 1

r = +3
s = -2
T = -4

To compute average of R, S, & T with r, s, t, taking choice E, I am getting - 3 as average. But this is not the average of R, S, & T. Am I missing something?
Top
Post new topic Post Reply
• Page 1 of 1