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Re: If George had 16 more textbooks, he would have three times [#permalink]
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27 Dec 2012, 10:07
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tim415 wrote:
If George had 16 more textbooks, he would have three times as many textbooks as Ann does. Does George have more textbooks than Ann has?
(1) Ann has more than 5 textbooks (2) George has fewer than 8 textbooks
Suppose George has G books and Ann has A books then G + 16 = 3A is G > A?
STAT1: A > 5 G = 3A - 16 if A is 2000 then G = 6000 - 16 > 2000 (> A) But if A = 6 then G = 2, so G < A so, NOT SUFFICIENT
STAT2: G < 8 G + 16 = 3A => G = 3A -16 < 8 3A < 24 A < 8 For Any value of A < 8 G will be always less than A A = 7 => G = 3*7 - 16 = 5 A = 6 => G = 3*6 - 16 = 2 A = 5 or less will give negative values of G so not possible Hence G < A so, SUFFICIENT. Hence answer will be B Hope it helps!
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Re: If George had 16 more textbooks, he would have three times [#permalink]
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20 Feb 2013, 19:33
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tbhagnari wrote:
But if George had 0 books, this doesn't work and the answer would be E
Consider that George had 0 books. If he had 16 more books, the total number of books would be 16. This would be equal to 3 times the number of books Ann has. 16=3(Ann's books)
Hence, Ann's books=16/3
This is a decimal. One cannot have books in decimal and thus George cannot have 0 books.
Re: If George had 16 more textbooks, he would have three times [#permalink]
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22 Feb 2013, 04:42
tim415 wrote:
If George had 16 more textbooks, he would have three times as many textbooks as Ann does. Does George have more textbooks than Ann has?
(1) Ann has more than 5 textbooks (2) George has fewer than 8 textbooks
if x+16=3y,i.e. if x = 3y-16, is x>y
from 1 , y>5, using w.c.s put y = 6 (no half books are allowed) then x = 2 and y>x put y = 200 then x = 584 and x>y..insuff
from 2
x<8 , y or and x has to be whole numbers ( i.e. books) thus what ever values x takes x+16 has to be a multiple of 3 ,i.e. x+16= ( x= 2, 5) , in all cases y is always greater ........suff
Re: If George had 16 more textbooks, he would have three times [#permalink]
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22 Feb 2013, 05:43
If George had 16 more textbooks, he would have three times as many textbooks as Ann does. Does George have more textbooks than Ann has?
(1) Ann has more than 5 textbooks (2) George has fewer than 8 textbooks
This question can be done using algebra.
G + 16 = 3A
Statement (1): If A = 6 then G = 2 (NO: George does not have more textbooks than Ann) If A = 12 then G = 20 (YES: George have more textbooks than Ann)
Since we got a Yes and a No then means this statement is insufficient to give us a clear answer.
Statement (2): (Let us try to give George the maximum number of notebooks) If G = 5 then A = 7 (NO: George does not have more textbooks than Ann) Even after having maximum number of notebooks George has less notebooks than Anne, hence in every case George will have less notebooks than Anne. Hence the answer is (B)
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Re: If George had 16 more textbooks, he would have three times [#permalink]
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14 May 2015, 10:44
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Re: If George had 16 more textbooks, he would have three times [#permalink]
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20 Mar 2017, 10:23
I don't understand why 2 can't work for the information (B) ?
2+16 = 18 books, and then Anna may have 6 books. Is there some point i missed in the mathematical calculation , or cold anyone please clarify whe 5+16 ==> works , but 2+16>> 6 does not work?
If George had 16 more textbooks, he would have three times as many textbooks as Ann does. Does George have more textbooks than Ann has?
(1) Ann has more than 5 textbooks (2) George has fewer than 8 textbooks
I don't understand why 2 can't work for the information (B) ?
2+16 = 18 books, and then Anna may have 6 books. Is there some point i missed in the mathematical calculation , or cold anyone please clarify whe 5+16 ==> works , but 2+16>> 6 does not work?
If George had 16 more textbooks, he would have three times as many textbooks as Ann does. Does George have more textbooks than Ann has?
If George had 16 more textbooks, he would have three times as many textbooks as Ann does: G + 16 = 3A (A = (G + 16)/3)
Is G > A? Is G > (G + 16)/3? Is G > 8?
(1) Ann has more than 5 textbooks. If A = 6, then G = 2 < 8 but if A = 10, then G = 14 > 8. Not sufficient.
(2) George has fewer than 8 textbooks. Directly answers the question. Sufficient.
Re: If George had 16 more textbooks, he would have three times [#permalink]
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21 Mar 2017, 00:47
Bunuel wrote:
mesutthefail wrote:
If George had 16 more textbooks, he would have three times as many textbooks as Ann does. Does George have more textbooks than Ann has?
(1) Ann has more than 5 textbooks (2) George has fewer than 8 textbooks
I don't understand why 2 can't work for the information (B) ?
2+16 = 18 books, and then Anna may have 6 books. Is there some point i missed in the mathematical calculation , or cold anyone please clarify whe 5+16 ==> works , but 2+16>> 6 does not work?
If George had 16 more textbooks, he would have three times as many textbooks as Ann does. Does George have more textbooks than Ann has?
If George had 16 more textbooks, he would have three times as many textbooks as Ann does: G + 16 = 3A (A = (G + 16)/3)
Is G > A? Is G > (G + 16)/3? Is G > 8?
(1) Ann has more than 5 textbooks. If A = 6, then G = 2 < 8 but if A = 10, then G = 14 > 8. Not sufficient.
(2) George has fewer than 8 textbooks. Directly answers the question. Sufficient.
Answer: B.
Hope it's clear.
Thank you. I'M so frustrated of nowadays(due to studying) so i'm making a lot of simple mistakes like this. :<
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58% (01:20) correct
