Ratio

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treker: Senior | Next Rank: 100 Posts; Posts: 33; Joined: Fri Aug 22, 2008 9:32 pm; Thanked: 1 times

by treker » Thu Sep 17, 2009 9:43 am

If x and y are positive, is the ratio of x to y greater than 3 ?

(1) x is 2 more than 3 times y.
(2) The ratio of 2x to 3y is greater than 2.

Source: Beat The GMAT — Data Sufficiency | Thu Sep 17, 2009 9:43 am

scoobydooby: Legendary Member; Posts: 1035; Joined: Wed Aug 27, 2008 10:56 pm; Thanked: 104 times; Followed by:1 members

by scoobydooby » Fri Sep 18, 2009 4:09 am

getting D

1) x=3y+2
=>x/y=(3y+2)/y= 3+2/y > 3 (since y is >0)
sufficient

2)2x/3y>2/1
=>x/y> 3 (cross multiplying as x, y>0)
sufficient

hence, D

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