Guys,
please check my thinking
OA B
75 = (have patio)+(have pool)-(have patio and pool)+(do not have patio and pool)
Main stem:
75 = (48)+(have pool)-(have patio and pool)+(do not have patio and pool)
Question: (have pool) = ?
(1)
only patio = 38, therefore (have patio and pool)=10
75 = (38)+(have pool)-(10)+(do not have patio and pool)
Question: (have pool) = ?, we do not know (do not have patio and pool).
INSUFF
(2)
(have patio and pool)=(do not have patio and pool) let it be x
75 = (48)+(have pool)-x+x
75 = (48)+(have pool)
(have pool)=27
SUFF
B
I dont know why, but i fell i am not correct
Fell I became very suspicious
Patio + Swimming poll (sets)
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Hi,
Let's simplify the problem:
A= only patio
B= only swimming pool
C= Patio and swimming pool
D= Neither Patio nor Swimming Pool
So
75 = A +B+C+D
48 = A + C
Hence 1: allows us to know that C= 10 so it's insufficient to solve the problem alone
hence 2: alone we can only find that C=D, alone this hence is insufficient
But if you take BOTH hences together you can find the answer:
75 = (A+C) + B + D = (A+C) + B + C = 48 + B + 10
75 = 58 + B
B = 17
PS: To help you solve this problem you can also draw some circles.
Let's simplify the problem:
A= only patio
B= only swimming pool
C= Patio and swimming pool
D= Neither Patio nor Swimming Pool
So
75 = A +B+C+D
48 = A + C
Hence 1: allows us to know that C= 10 so it's insufficient to solve the problem alone
hence 2: alone we can only find that C=D, alone this hence is insufficient
But if you take BOTH hences together you can find the answer:
75 = (A+C) + B + D = (A+C) + B + C = 48 + B + 10
75 = 58 + B
B = 17
PS: To help you solve this problem you can also draw some circles.
really want to beat the GMAT
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It will be A+B-C+Dalto34 wrote:Hi,
Let's simplify the problem:
A= only patio
B= only swimming pool
C= Patio and swimming pool
D= Neither Patio nor Swimming Pool
So
75 = A +B+C+D
48 = A + C
Hence 1: allows us to know that C= 10 so it's insufficient to solve the problem alone
hence 2: alone we can only find that C=D, alone this hence is insufficient
But if you take BOTH hences together you can find the answer:
75 = (A+C) + B + D = (A+C) + B + C = 48 + B + 10
75 = 58 + B
B = 17
PS: To help you solve this problem you can also draw some circles.
so From 2nd stmt we will get 75 = A+B as (C=D)
A=48, so B=27.
Hence imo B.
What if i have not yet beat the beast, I know i will beat it!!!!!!!!
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pick numbers to check if B is correct
A = 48
A + B + C + D = 75
C = D
that's all we know
example 1
C = D = 11
then B = 5
C = D = 10
then B = 7
Hence we need statement one to answer... so...C!
A = 48
A + B + C + D = 75
C = D
that's all we know
example 1
C = D = 11
then B = 5
C = D = 10
then B = 7
Hence we need statement one to answer... so...C!
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this is a canonical overlapping sets problem, so set up the double-set matrix.
a solution is here:
https://xs228.xs.to/xs228/08263/pool_pat ... ion565.jpg
answer = b
--
if you don't like using x for the number quoted in statement (2), you could always try plugging in a couple of different numbers, and noting that you get the same answer no matter what number you plug in.
a solution is here:
https://xs228.xs.to/xs228/08263/pool_pat ... ion565.jpg
answer = b
--
if you don't like using x for the number quoted in statement (2), you could always try plugging in a couple of different numbers, and noting that you get the same answer no matter what number you plug in.
Ron has been teaching various standardized tests for 20 years.
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Pueden hacerle preguntas a Ron en castellano
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Quand on se sent bien dans un vêtement, tout peut arriver. Un bon vêtement, c'est un passeport pour le bonheur.
Yves Saint-Laurent
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Pueden hacerle preguntas a Ron en castellano
Potete chiedere domande a Ron in italiano
On peut poser des questions à Ron en français
Voit esittää kysymyksiä Ron:lle myös suomeksi
--
Quand on se sent bien dans un vêtement, tout peut arriver. Un bon vêtement, c'est un passeport pour le bonheur.
Yves Saint-Laurent
--
Learn more about ron