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Last year the worldwide paper industry used over twice as [#permalink]
17 Jan 2005, 13:28

1

This post was BOOKMARKED

00:00

A

B

C

D

E

Difficulty:

5% (low)

Question Stats:

63% (02:23) correct
38% (01:44) wrong based on 16 sessions

Last year the worldwide paper industry used over
twice as much fresh pulp (pulp made directly from
raw plant fibers) as recycled pulp (pulp made from
wastepaper). A paper-industry analyst has projected
that by 2010 the industry will use at least as much
recycled pulp annually as it does fresh pulp, while
using a greater quantity of fresh pulp than it did last
year.
If the information above is correct and the analystâ€™s
projections prove to be accurate, which of the
following projections must also be accurate?
(A) In 2010 the paper industry will use at least twice
as much recycled pulp as it did last year.
(B) In 2010 the paper industry will use at least twice
as much total pulp as it did last year.
(C) In 2010 the paper industry will produce more
paper from a given amount of pulp than it did last
year.
(D) As compared with last year, in 2010 the paper
industry will make more paper that contains only
recycled pulp.
(E) As compared with last year, in 2010 the paper
industry will make less paper that contains only
fresh pulp.

Re: Last year the worldwide paper industry used over twice as [#permalink]
15 Jun 2014, 05:23

qhoc0010 wrote:

Last year the worldwide paper industry used over twice as much fresh pulp (pulp made directly from raw plant fibers) as recycled pulp (pulp made from wastepaper). A paper-industry analyst has projected that by 2010 the industry will use at least as much recycled pulp annually as it does fresh pulp, while using a greater quantity of fresh pulp than it did last year. If the information above is correct and the analystâ€™s projections prove to be accurate, which of the following projections must also be accurate? (A) In 2010 the paper industry will use at least twice as much recycled pulp as it did last year. (B) In 2010 the paper industry will use at least twice as much total pulp as it did last year. (C) In 2010 the paper industry will produce more paper from a given amount of pulp than it did last year. (D) As compared with last year, in 2010 the paper industry will make more paper that contains only recycled pulp. (E) As compared with last year, in 2010 the paper industry will make less paper that contains only fresh pulp.

down to A and D. Couldn't eliminate either.. can someone explain why D is incorrect?

Re: Last year the worldwide paper industry used over twice as [#permalink]
15 Jun 2014, 06:52

I think 'D' would not be right because, even though the quantity of recycled pulp used doubles, we cannot assume that papers are made exclusively out of the recycled pulp. Nowhere does it say that papers are made exclusively out one or the other pulp.Only overall quantity used by the industry is mentioned. Its very likely that the pulps are mixed(not necessarily, but we cannot assume one way or the other, i.e D is not perfectly true).

Re: Last year the worldwide paper industry used over twice as [#permalink]
16 Jun 2014, 07:23

Choices C, D, and E talk about the production of paper, whereas the argument only talks about how paper was made. We either quickly eliminate those choices, or take a closer look at them later since Choices A and B talk of the premises, directly.

I think with these types of Inference Qs, creating quick variables can be helpful. I'll tack onto what Nocilis did back in ancient times:

Last Year: FP > 2x RP > x 2010: RP is > or = FP, FP >2x ----------> RP > 2x

2010 RP is at least 2 times greater than Last Year's RP.

Re: Last year the worldwide paper industry used over twice as [#permalink]
16 Jun 2014, 20:32

sshrivats wrote:

I think 'D' would not be right because, even though the quantity of recycled pulp used doubles, we cannot assume that papers are made exclusively out of the recycled pulp. Nowhere does it say that papers are made exclusively out one or the other pulp.Only overall quantity used by the industry is mentioned. Its very likely that the pulps are mixed(not necessarily, but we cannot assume one way or the other, i.e D is not perfectly true).

The only sound reason by which I think D is not correct , is , if D is correct then E also has to be correct and GMAT question can't have two answers.

gmatclubot

Re: Last year the worldwide paper industry used over twice as
[#permalink]
16 Jun 2014, 20:32