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w + x = -4 x + y = 25 y + w = 15
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14 Nov 2022, 03:05
14 Nov 2022, 03:05
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Question Stats:
66% (01:26) correct
33% (02:27) wrong based on 15 sessions
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w + x = -4
x + y = 25
y + w = 15
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
x + y = 25
y + w = 15
Quantity A |
Quantity B |
The average (arithmetic mean) of w , x and y |
6 |
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
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Free Materials for the GRE General Exam - Where to get it!!
GRE Geometry Formulas
GRE - Math Book
Re: w + x = -4 x + y = 25 y + w = 15
[#permalink]
17 Nov 2022, 20:44
17 Nov 2022, 20:44
1
We have three equations
1) w+x = -4
2) x+y = 25
3) y+w = 15
From first equation,
W=-4-x
Substitute this into third equation
Y + W = 15
Y + (-4-x) = 15
Y = 19+x
Substitute this into second equation.
X + Y = 25
X + (19+x) = 25
X = 3
Therefore,
W = -4-(3) = -7
Y = 19+(3) = 22
The mean of x y w =
(3+22-7)/3 = 6
Quantity A = Quantity B (6)
Posted from my mobile device
1) w+x = -4
2) x+y = 25
3) y+w = 15
From first equation,
W=-4-x
Substitute this into third equation
Y + W = 15
Y + (-4-x) = 15
Y = 19+x
Substitute this into second equation.
X + Y = 25
X + (19+x) = 25
X = 3
Therefore,
W = -4-(3) = -7
Y = 19+(3) = 22
The mean of x y w =
(3+22-7)/3 = 6
Quantity A = Quantity B (6)
Posted from my mobile device
gmatclubot
Re: w + x = -4 x + y = 25 y + w = 15 [#permalink]
17 Nov 2022, 20:44
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