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S = {y-z, x}. The mean of set S is 3y. What is the unknown member of
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31 Jul 2022, 04:38
31 Jul 2022, 04:38
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S = {y-z, x}. The mean of set S is 3y. What is the unknown member of the set, x, in terms of y and z?
A 3y
B z – 5y
C z + 5y
D z - 3
E 4y + 3
A 3y
B z – 5y
C z + 5y
D z - 3
E 4y + 3
Part of the project: GRE QCQ & PS 3 Questions Every One DAILY Challenge - (2022)
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GRE Math Essentials (2022)
GRE Geometry Formulas for a Q170
GRE - Math Book
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GRE Math Essentials (2022)
GRE Geometry Formulas for a Q170
GRE - Math Book
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GMAT 1: 700 Q51 V31
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Re: S = {y-z, x}. The mean of set S is 3y. What is the unknown member of
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31 Jul 2022, 22:43
31 Jul 2022, 22:43
1
Theory
Given that Set S = {y-z, x} and mean is 3y and we need to find x in terms of y and z.
Mean of Set S = Sum of All the Values / 2 (As there are 2 values)
=> Mean = \(\frac{(y-z) + x }{ 2}\) = 3y (given)
=> y - z + x = 2*3y = 6y
=> x = 6y - y + z = 5y + z = z + 5y
So, Answer will be C.
Hope it helps!
Watch the following video to Learn the Basics of Statistics
- ➡ Mean or Average = Sum of All the Values / Total Number of Values.
Given that Set S = {y-z, x} and mean is 3y and we need to find x in terms of y and z.
Mean of Set S = Sum of All the Values / 2 (As there are 2 values)
=> Mean = \(\frac{(y-z) + x }{ 2}\) = 3y (given)
=> y - z + x = 2*3y = 6y
=> x = 6y - y + z = 5y + z = z + 5y
So, Answer will be C.
Hope it helps!
Watch the following video to Learn the Basics of Statistics
gmatclubot
Re: S = {y-z, x}. The mean of set S is 3y. What is the unknown member of [#permalink]
31 Jul 2022, 22:43
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