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

Redeem

GMATPrep

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
Master | Next Rank: 500 Posts
Posts: 144
Joined: Thu Apr 17, 2008 3:33 pm
Thanked: 8 times

by Sunny22uk » Mon Sep 15, 2008 10:11 am
Time Machine X took=x
Time Machine Y took=y
Their rate together 1/x+1/y=x+y/xy
Time took by machines together =xy/x+y
Statement A
xy/x+y=2/3x(it's 2/3 of the time took by X)
y=2X
Statement A is not sufficient to answer the question
Statement B
y=2X
Statement b is not sufficient to answer the question
Answer E
You cannot discover new oceans unless you have the courage to loose sight of the shore.
Top
User avatar
Senior | Next Rank: 100 Posts
Posts: 55
Joined: Sun Sep 14, 2008 6:51 am
Location: Netherlands
Thanked: 10 times
GMAT Score:680

by tendays2go » Mon Sep 15, 2008 12:40 pm
right..it's E
had the discrete valus been given for the rate of X/Y,
answer would have been D
Top
Post new topic Post Reply
• Page 1 of 1