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Linda, Robert, and Pat packed a certain number of boxes with books. Wh

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Linda, Robert, and Pat packed a certain number of boxes with books. Wh  [#permalink]

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New post 15 Jul 2018, 21:17
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Linda, Robert, and Pat packed a certain number of boxes with books. What is the ratio of the number of boxes of books that Robert packed to the number of boxes of books that Pat packed?

(1) Linda packed 30 percent of the total number of boxes of books.

(2) Robert packed 10 more boxes of books than Pat did.

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Re: Linda, Robert, and Pat packed a certain number of boxes with books. Wh  [#permalink]

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New post 15 Jul 2018, 21:40
Bunuel wrote:
Linda, Robert, and Pat packed a certain number of boxes with books. What is the ratio of the number of boxes of books that Robert packed to the number of boxes of books that Pat packed?

(1) Linda packed 30 percent of the total number of boxes of books.

(2) Robert packed 10 more boxes of books than Pat did.


Bunuel Are these questions from GMATPrep free exam pack?

(1) Linda packed 30 percent of the total number of boxes of books.

Let Total = 100

Case A)

L=30 & R =35, P= 35

Case B)

L=30, R=10 & P=60

In case A & B Ratio is different

Hence Not Suff

(2) Robert packed 10 more boxes of books than Pat did

We don't know the total number of boxes also L=?

Hence Not Suff

Combining 1 & 2

Case A)

T= 100, then , L =30 and R+P packed 70.

The second statement means that R packed 40 and P packed 30, for a ratio of 40:30 or 4:3.

Case B)

T= 20, then L = 6 and R+P = 14. In this case, the ratio would be different, so not sufficient. Eliminate C.

Hence E
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Re: Linda, Robert, and Pat packed a certain number of boxes with books. Wh  [#permalink]

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New post 15 Jul 2018, 21:42
Bunuel wrote:
Linda, Robert, and Pat packed a certain number of boxes with books. What is the ratio of the number of boxes of books that Robert packed to the number of boxes of books that Pat packed?

(1) Linda packed 30 percent of the total number of boxes of books.

(2) Robert packed 10 more boxes of books than Pat did.


St1:- Let total #of boxes=X=L+R+P
L=0.3X
No info on R & P.
So insufficient to determine R/P.

St2:-R=P+10,
No info on X .
So insufficient to determine R/P.

(1)+(2), no additional info on relation between R and X or R and L.
So insufficient to determine R/P.

Ans. (E)
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Re: Linda, Robert, and Pat packed a certain number of boxes with books. Wh &nbs [#permalink] 15 Jul 2018, 21:42
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