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

Redeem

Manhattan GMAT challenge question

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
Senior | Next Rank: 100 Posts
Posts: 98
Joined: Mon Jun 11, 2007 10:32 pm
Location: Mumbai

by ratindasgupta » Mon Oct 08, 2007 10:03 am
Statement 1 - w/x = z^-1 + x^-1
Solving it, we get that wz = x + z
Since all 4 are integers, we can deduce that z = 1 and w is greater than x by 1. Since x is 1, y will have to be 2 or more. So y cannot be a factor of w and x which are consecutive numbers. SUFF

2. w^2-wy-2w=0
Solving this, we get, w - y = 2
So w , x and y have to be consecutive integers. So y cannot be a factor of w and x. SUFF

Answer should be D
Top
Post new topic Post Reply
• Page 1 of 1