-
nandansingh
- Senior | Next Rank: 100 Posts
- Posts: 52
- Joined: Sat Sep 27, 2008 11:38 am
- Location: Hyderabad
- Thanked: 3 times
nandansingh wrote:If -2x>3y, is x negative?
1. y>0
2. 2x+5y-20=0
This is very interesting question.
Statement I
y> 0, therefore x<0. Sufficient.
Statement II
2x+5y-20=0
2x+5y = 20
2x+3y + 2y = 20
since we know that 3y+2x < 0
therefore y has to be greater than 0, thus, x<0.
Sufficient.
Hence D.
The second statement from the look of it is insufficient, but when start to solve it you'll find out that x has to be negative.
