Paper pulp

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Paper pulp

by reply2spg » Mon Aug 09, 2010 11:26 am
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 analyst'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 years.
(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.

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Sudhanshu
(have lot of things to learn from all of you)
Source: — Critical Reasoning |

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by beatthegmatinsept » Mon Aug 09, 2010 12:00 pm
IMO D.

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by debmalya_dutta » Mon Aug 09, 2010 12:35 pm
My pick was A

fresh pulp(last year) = 2(recycled pulp ) (last year) and fresh pulp(2010)= (recycled pulp ) (2010)

fresh pulp(2010) > fresh pulp(last year)
So...fresh pulp(2010) > fresh pulp(last year) = 2(recycled pulp ) (last year) or
(recycled pulp ) (2010) > fresh pulp(last year) = 2(recycled pulp ) (last year)


From A
(A) In 2010 the paper industry will use at least twice as much recycled pulp as it did last years.
which means
(recycled pulp ) (2010) > 2(recycled pulp ) (last year)
This matches with our derivation above.....

If I may ask , what is the source .. I took close to 2 mins...

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by reply2spg » Mon Aug 09, 2010 3:58 pm
OA A....

Sorry Dutta, I don't have a source of this question. This is the one discussed years back on BTG forum
debmalya_dutta wrote:My pick was A

fresh pulp(last year) = 2(recycled pulp ) (last year) and fresh pulp(2010)= (recycled pulp ) (2010)

fresh pulp(2010) > fresh pulp(last year)
So...fresh pulp(2010) > fresh pulp(last year) = 2(recycled pulp ) (last year) or
(recycled pulp ) (2010) > fresh pulp(last year) = 2(recycled pulp ) (last year)


From A
(A) In 2010 the paper industry will use at least twice as much recycled pulp as it did last years.
which means
(recycled pulp ) (2010) > 2(recycled pulp ) (last year)
This matches with our derivation above.....

If I may ask , what is the source .. I took close to 2 mins...
Sudhanshu
(have lot of things to learn from all of you)