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Is x – y ≥ 5 ? (1) x ≥ 9 (2) y ≥ 4

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Bunuel
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Is x – y ≥ 5 ? (1) x ≥ 9 (2) y ≥ 4 [#permalink] New post   23 May 2020, 04:34
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A
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76% (00:53) correct 24% (00:52) wrong based on 274 sessions
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Is x – y ≥ 5 ?

(1) x ≥ 9
(2) y ≥ 4


DS21189
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E
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IanStewart
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Re: Is x – y ≥ 5 ? (1) x ≥ 9 (2) y ≥ 4 [#permalink] New post   23 May 2020, 05:34
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We need information about both x and y, so the answer must be C or E. But even using both Statements, we don't have enough information. It might be true that x = 1,000,000 and y = 10, in which case x - y > 5. But it might be true that x = 10 and y = 1,000,000, in which case x - y is very negative, so x - y < 5. So the answer is E.
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Re: Is x – y ≥ 5 ? (1) x ≥ 9 (2) y ≥ 4 [#permalink] New post   23 May 2020, 06:35
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Bunuel wrote:
Is x – y ≥ 5 ?

(1) x ≥ 9
(2) y ≥ 4


PS21189


statement 1: x ≥ 9
no information about y.
let x=9, y=3; x-y=6; sufficient
let x=9, y=9; x-y=0; not sufficient

statement 2: y≥4
no information about x.
let x=9, y=4; x-y=5; sufficient
let x=9, y=9; x-y=0; not sufficient

combining two statement 1 and 2, we get
x≥9, y≥4; x can be equal to 9 or more than 9, y can be 4 or more than 4. it may be possible y>x as y=10, x=9 and hence not sufficient
still we take example as below to confirm the same.
let x=10, y=4; x-y=6; sufficient
let x=10, y=10; x-y=0; not sufficient

therefore E
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Re: Is x – y ≥ 5 ? (1) x ≥ 9 (2) y ≥ 4 [#permalink] New post   28 May 2020, 08:54
Bunuel wrote:
Is x – y ≥ 5 ?

(1) x ≥ 9
(2) y ≥ 4


DS21189


target x-y>=5
#1
x>=9
no info about y insufficient
#2
y>=4 ;
no info about x insufficient
from 1 &2
x=9 and y = 4 ; so x – y ≥ 5 ; yes
x=9 and y = 4 ; so x – y ≥ 5 ; NO
insufficient
OPTION E;;
Bunuel ; hi is given OA correct? shouldnt it be E?
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Is x – y ≥ 5 ? (1) x ≥ 9 (2) y ≥ 4 [#permalink] New post   14 Jun 2020, 09:43
Bunuel wrote:
Is x – y ≥ 5 ?

(1) x ≥ 9
(2) y ≥ 4


DS21189

but oa for this on mba.com is c
Bunuel help here is image shot from mba.com of soln
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Bunuel
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Re: Is x – y ≥ 5 ? (1) x ≥ 9 (2) y ≥ 4 [#permalink] New post   14 Jun 2020, 10:11
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ayushkumar22941 wrote:
Bunuel wrote:
Is x – y ≥ 5 ?

(1) x ≥ 9
(2) y ≥ 4


DS21189

but oa for this on mba.com is c
Bunuel help here is image shot from mba.com of soln


In the solution they provide, (2) is y <= 4, not y ≥ 4.
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Bunuel
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Re: Is x – y ≥ 5 ? (1) x ≥ 9 (2) y ≥ 4 [#permalink] New post   14 Jun 2020, 10:12
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ayushkumar22941 wrote:
Bunuel wrote:
Is x – y ≥ 5 ?

(1) x ≥ 9
(2) y ≥ 4


DS21189

but oa for this on mba.com is c
Bunuel help here is image shot from mba.com of soln


Here is that question: https://gmatclub.com/forum/is-x-y-5-1-x ... 26670.html
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Re: Is x y 5 ? (1) x 9 (2) y 4 [#permalink] New post   03 Dec 2023, 11:55
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Re: Is x y 5 ? (1) x 9 (2) y 4 [#permalink]
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