Can u please check if OA is [spoiler]B)[/spoiler] ?
I must be misisng something if not.... I will check again
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DS
Source: Beat The GMAT — Data Sufficiency |
I am getting B.. can u pls check the OA.
Here is my approach.
Cramya, Logitech. Pls let me know if I have messed up.
stmt 1:
x^2 / (xy -x) < 1
This can be simplified coz x and y != 0 (the min requirement)
so simplying
x/(y+1) < 1
= x < y+1
We are not sure whether x < y. since x < (y+1), x could be = y or >y
So insufficient.
Stmt2:
xy/(y^2 -y) < 1
again simplifying
x/(y-1) < 1
= x < y-1
x is less than y-1. Hence x is definitely less than y.
Sufficient.
B
Here is my approach.
Cramya, Logitech. Pls let me know if I have messed up.
stmt 1:
x^2 / (xy -x) < 1
This can be simplified coz x and y != 0 (the min requirement)
so simplying
x/(y+1) < 1
= x < y+1
We are not sure whether x < y. since x < (y+1), x could be = y or >y
So insufficient.
Stmt2:
xy/(y^2 -y) < 1
again simplifying
x/(y-1) < 1
= x < y-1
x is less than y-1. Hence x is definitely less than y.
Sufficient.
B
stmt 2 can be solved as x < y-1 , as both positive, that sure implies x is less that y
I am too going with B
I am too going with B
vittalgmat, your solution looks good. But I hope you know why the sign did not change when you got:vittalgmat wrote:I am getting B.. can u pls check the OA.
Here is my approach.
Cramya, Logitech. Pls let me know if I have messed up.
stmt 1:
x^2 / (xy -x) < 1
This can be simplified coz x and y != 0 (the min requirement)
so simplying
x/(y+1) < 1
= x < y+1
We are not sure whether x < y. since x < (y+1), x could be = y or >y
So insufficient.
Stmt2:
xy/(y^2 -y) < 1
again simplifying
x/(y-1) < 1
= x < y-1
x is less than y-1. Hence x is definitely less than y.
Sufficient.
B
x/(y-1) < 1
= x < y-1
Because you know that Y-1 is a positive number right ? Otherwise you could have gotten into trouble!
LGTCH
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"DON'T LET ANYONE STEAL YOUR DREAM!"
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"DON'T LET ANYONE STEAL YOUR DREAM!"
Yep I did Logitech.. Thanks for pointing me out.
I was 90% sure .. now coz u pointed it out, I will remember this!!
I was 90% sure .. now coz u pointed it out, I will remember this!!
I agree. Its good to get it clarified when in doubt.sorry guys, the sets aren't very reliable. At least not the ones I have.
Regards,
Cramya
