Target Test Prep is 20% off right now!
Use code FLASH20
Available with Beat the GMAT members only code
MORE DETAILS
m,n
This topic has expert replies
-
vivek.kapoor83
- Legendary Member
- Posts: 833
- Joined: Mon Aug 04, 2008 1:56 am
- Thanked: 13 times
given both m and n >0
we cross-multipy
the question becomes, is mn+nx > mn + mx
mn + nx -mn - mx >0
x(n-m)>0
for this to be true
either x>0 and n>m
or x<0 and n<m
St1: gives only one info: INSUFFICIENT
st2: gives only one info: INSUFFICIENT
Together we know both x>0 and m<n: Sufficient
we cross-multipy
the question becomes, is mn+nx > mn + mx
mn + nx -mn - mx >0
x(n-m)>0
for this to be true
either x>0 and n>m
or x<0 and n<m
St1: gives only one info: INSUFFICIENT
st2: gives only one info: INSUFFICIENT
Together we know both x>0 and m<n: Sufficient
-
vivek.kapoor83
- Legendary Member
- Posts: 833
- Joined: Mon Aug 04, 2008 1:56 am
- Thanked: 13 times
hv query here,
for eq to be true both condition in each eq should be true.How can u choose 1 from stm1 & stm2 ..is this possible.?
for eq to be true both condition in each eq should be true.How can u choose 1 from stm1 & stm2 ..is this possible.?
-
cramya
- Legendary Member
- Posts: 2467
- Joined: Thu Aug 28, 2008 6:14 pm
- Thanked: 331 times
- Followed by:11 members
To find m+x/n+x > m/n
(or) m+x/n+x - m/n>0
x(n-m)/n(n+x) >0
Stmt I
m<n
No idea what x could be or how n+x turns out
INSUFF
Stmt II
x>0
No info on m,n other than both are greater than 0
INSUFF
Together
x>0 m>0 n>0 n>m
x(n-m)/n(n+x) >0
SUFF
Choose C)
(or) m+x/n+x - m/n>0
x(n-m)/n(n+x) >0
Stmt I
m<n
No idea what x could be or how n+x turns out
INSUFF
Stmt II
x>0
No info on m,n other than both are greater than 0
INSUFF
Together
x>0 m>0 n>0 n>m
x(n-m)/n(n+x) >0
SUFF
Choose C)
