Set 10 Q13

arocks · Posted: Sun Oct 07, 2007 4:53 am Post subject: Set 10 Q13

If x and y are positive, is 3x > 7y?
(1) x > y + 4
(2) -5x < -14y

I think the answer is B. The OA is D.

Stmt2
-5x<-14y or 5x>14y or 2.5x>7y
So stmt2 is suff.

stmt1 - Not sure how statement1 is useful?
Pls explain. Thanks.

samirpandeyit62 · Posted: Sun Oct 07, 2007 5:41 am Post subject:

If x and y are positive, is 3x > 7y?

(1) x > y + 4

here if y =2 then x =6 & 3x>7y

y =3 then x =7 so 3x =7y

but if y is greater than 4 then 3x<4y

Hnece this cannot be sufficeint

2) -5x < -14y

i.e 5x > 14y

so we have 2.5x>7y

so suff

Ans should be B