My answers are
1. C
2. C
3. B
4. C
5. B
6. D
Q1. I did this by normalising (Tuneman , you got it right)
From stmt 1
W:C=5:2
C:M=2:11
So
W:C:M=25:10:22 ( take LCM of 2 and 5)
This tells us # women has to be multiple of 25, but it does not give exact number so INSUFF
Stmt 2 W < 30 does not help INSUFF
Combning both we get W = 25
Q2.
From Stmt 1
We have 3Z < M
From Stmt 2
we have M < 4Z
Since we dont know if M and Z are +ve or -ve above are INSUFF individually
Combining
3Z < M < 4Z
Since 3Z < 4Z , Z has to be +ve
so M has to be +ve
and therefore M + Z has to be +ve
Q3.As explained by pi10t
Q4.
Stmt 1
4% of FRENCH = 16 therefore 100% of FRENCH = 25 * 16 = 400
Stmt 2
10% of JAPANESE = 16 therefore 100% of JAPANESE = 10 * 16 = 160
stmt 1 and 2 by itself is INSUFF, together SUFF
Q5.
Not sure about this one
This is what I did
Actually tried 4 cases
1. Both +ve : |X-Y|
= |X| -|Y|
2. Both -ve : |X-Y|
= |X| -|Y|
3. X -ve and Y +ve : |X-Y|
> |X| -|Y|
4. X +ve and Y -ve : |X-Y|
> |X| -|Y| Modified the equality sign here
So if we know the signs we can answer the question.
As you see
Stmt 1 does not tell us about sign
While
Stmt 2 tells us that atleast one of them has to be -ve; So case 3 and 4 above indicates LHS > RHS
Q6.
http://www.gmatclub.com/phpbb/viewtopic.php?t=39492
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