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If x + y =8 and y- x = -2, then y=
[#permalink]
07 Apr 2018, 21:02
07 Apr 2018, 21:02
1
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Question Stats:
28% (00:18) correct
71% (00:32) wrong based on 7 sessions
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Re: If x + y =8 and y- x = -2, then y=
[#permalink]
07 Apr 2018, 21:48
07 Apr 2018, 21:48
1
x+y = 8
y-x = -2
On adding both the equations,
x+y+y-x = 8 + (-2)
2y = 6
y=3
Hence B.
If questions asks for x,
Substituting y in equation 1,
x+y = 8
x+3 =8
x=8-3
x=5
y-x = -2
On adding both the equations,
x+y+y-x = 8 + (-2)
2y = 6
y=3
Hence B.
If questions asks for x,
Substituting y in equation 1,
x+y = 8
x+3 =8
x=8-3
x=5
gmatclubot
Re: If x + y =8 and y- x = -2, then y= [#permalink]
07 Apr 2018, 21:48
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