OG 13th Edition PS question

This topic has expert replies
User avatar
Master | Next Rank: 500 Posts
Posts: 183
Joined: Wed Sep 21, 2011 7:06 am
Location: Washington, DC
Thanked: 6 times
Followed by:2 members
GMAT Score:500

OG 13th Edition PS question

by Rastis » Thu Dec 04, 2014 12:24 pm
Page 169, #121.

Why can't the answer be B? The area of the rectangles (combined) is 20. The area of the entire rectangle is 48. Why wouldn't you reduce 20/48 to eventually get answer choice B instead of D?

GMAT/MBA Expert

User avatar
Elite Legendary Member
Posts: 10392
Joined: Sun Jun 23, 2013 6:38 pm
Location: Palo Alto, CA
Thanked: 2867 times
Followed by:511 members
GMAT Score:800

by [email protected] » Thu Dec 04, 2014 12:30 pm
Hi Ratsis,

Your math is perfect but you are not answering the question that is ASKED.

The fraction that you calculated is the fraction of the door that is NOT the trim (20/48).

The question asks for the fraction that IS the trim (28/48).

GMAT assassins aren't born, they're made,
Rich
Contact Rich at [email protected]
Image