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

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Linda, Robert, and Pat packed a certain number of boxes with [#permalink] New post 16 May 2006, 23:24
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C
D
E

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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?

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

B) Robert packed 10 more boxes of books than Pat did.
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 [#permalink] New post 17 May 2006, 01:58
Its E.

Taking A and B together.

Let T be the total number of boxes packed.

L+R+P = T
L = 0.3T
R = P + 10

L+R+P = 0.3T + P+P+10 = T
P= (0.7T-10)/2

therefore R/P = (P+10)/P = (0.7T+10)/(0.7T-10)

which is not possible to know unless we know T.
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 [#permalink] New post 17 May 2006, 06:42
Must be E

Total = x
Linda = L
Robert = R
Pat = P

Find R/P

St1: L = 0.3x : INSUFF
St2: R = P + 10, R/P = 1 + 10/P: INSUFF

Combined : Clearly INSUFF
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 [#permalink] New post 17 May 2006, 07:13
Guys answer is C since we are looking at RATIO not at number of books.
Let say we have 100 books.
L - 30
R - x+10
P - x
30+x+10+x=100 => x=30
R/P=40/30=4/3
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 [#permalink] New post 17 May 2006, 07:38
What if we have 200 boxes

linda packed 60 boxes

between 140 boxes, Robert packed 75 and Pat packed 65 (total=140)
ratio = 75/65 = 15/13 which is not equal to 4/3

So, we need to know the total # of books in order to find the ratio as it will vary. I think if (2) had said "B) Robert packed 10% more boxes of books than Pat did" then we could have gone your route.
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 [#permalink] New post 17 May 2006, 08:07
good one
not sure but think it is E
my first thought was C picked numbers and got E)) :wink:
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Re: Books packed DS [#permalink] New post 08 Sep 2008, 05:56
gmatmba wrote:
What if we have 200 boxes

linda packed 60 boxes

between 140 boxes, Robert packed 75 and Pat packed 65 (total=140)
ratio = 75/65 = 15/13 which is not equal to 4/3

So, we need to know the total # of books in order to find the ratio as it will vary. I think if (2) had said "B) Robert packed 10% more boxes of books than Pat did" then we could have gone your route.


Thanks Dude !!! I had the exact same doubt and you helped me figure things out. Kudos to u.
Re: Books packed DS   [#permalink] 08 Sep 2008, 05:56
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