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What is the value of x^2 + 4y ?
[#permalink]
01 Nov 2018, 08:54
01 Nov 2018, 08:54
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A
B
C
D
E
Difficulty:
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Question Stats:
87% (00:45) correct
13%
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What is the value of x^2 + 4y ?
(1) x = 3
(2) x^2 + 2y = 17
_________________
(1) x = 3
(2) x^2 + 2y = 17
_________________
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Re: What is the value of x^2 + 4y ?
[#permalink]
01 Nov 2018, 08:59
01 Nov 2018, 08:59
St-1:
x = 3 ( No value of y is given ) Not sufficient
St-2
x^2 + 2y = 17
two variable one equation cannot calculate value of x^2 + 4y.
Combine: Two variable two equation, Now we can find out value.
Sufficient.
C
x = 3 ( No value of y is given ) Not sufficient
St-2
x^2 + 2y = 17
two variable one equation cannot calculate value of x^2 + 4y.
Combine: Two variable two equation, Now we can find out value.
Sufficient.
C
Re: What is the value of x^2 + 4y ?
[#permalink]
07 Nov 2018, 07:34
07 Nov 2018, 07:34
gmatbusters wrote:
What is the value of x^2 + 4y ?
(1) x = 3
(2) x^2 + 2y = 17
(1) x = 3
(2) x^2 + 2y = 17
I think answer should be C. Can you please confirm?
Re: What is the value of x^2 + 4y ?
[#permalink]
07 Nov 2018, 07:43
07 Nov 2018, 07:43
Expert Reply
Yes answer is C.
Thanks
I think answer should be C. Can you please confirm?
Posted from my mobile device
_________________
Thanks
KS15 wrote:
gmatbusters wrote:
What is the value of x^2 + 4y ?
(1) x = 3
(2) x^2 + 2y = 17
(1) x = 3
(2) x^2 + 2y = 17
I think answer should be C. Can you please confirm?
Posted from my mobile device
_________________
What is the value of x^2 + 4y ?
[#permalink]
08 Nov 2018, 10:11
08 Nov 2018, 10:11
why B is not sufficient?
x^2 +2y=17, here only x^2=9 satisfies the equation, which gives the value of y as 4.
we are not worried about the sign of x, as it is square
x^2 +2y=17, here only x^2=9 satisfies the equation, which gives the value of y as 4.
we are not worried about the sign of x, as it is square
gmatclubot
Re: What is the value of x^2 + 4y ? [#permalink]
04 Mar 2019, 05:21
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