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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Paper Pulp
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used over twice as much fresh pulp (pulp made directly from raw plant fibers) as recycled pulp
Suppose RP=10
Then FP=21
Now,if RP will become 22 but FP also became 22(FP is also increasing).
This means:
(A) In 2010 the paper industry will use at least twice as much recycled pulp as it did last years
Suppose RP=10
Then FP=21
Now,if RP will become 22 but FP also became 22(FP is also increasing).
This means:
(A) In 2010 the paper industry will use at least twice as much recycled pulp as it did last years
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NSNguyen
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I would go with A,
:roll:
:roll:
Please share your idea and your reasoning 
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Perfect explanation!raviagni wrote:used over twice as much fresh pulp (pulp made directly from raw plant fibers) as recycled pulp
Suppose RP=10
Then FP=21
Now,if RP will become 22 but FP also became 22(FP is also increasing).
This means:
(A) In 2010 the paper industry will use at least twice as much recycled pulp as it did last years
If RP is current less than 1/2 of FP, and FP is increasing, then for RP to "catch up" to FP it will have to more than double.
In algebraic terms, to get from (1/2)x to more than x, you need to more than double.
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Dhonu,
Context
Choice A and Choice D are talking about 2 fundamentally different things. Choice A, is talking about the paper industry using pulp(raw material to make paper) to produce paper while choice D talks about the paper (finished paper)
Why is Choice D incorrect?
Choice D states that the paper industry will make more paper that contains "only" recycled paper. Note, the only information that we know from the passage is that the paper industry will be using more recycled pulp in making paper. We don't know how that pulp is used in making paper. May be recycled pulp is used with (i.e. mixed with) fresh pulp to make paper. In that case we don't know the quantity of paper made "only" using recycled pulp. Because we dont know this number, we cannot draw any definitive conclusions about the quantities before and in 2010.
Context
Choice A and Choice D are talking about 2 fundamentally different things. Choice A, is talking about the paper industry using pulp(raw material to make paper) to produce paper while choice D talks about the paper (finished paper)
Why is Choice D incorrect?
Choice D states that the paper industry will make more paper that contains "only" recycled paper. Note, the only information that we know from the passage is that the paper industry will be using more recycled pulp in making paper. We don't know how that pulp is used in making paper. May be recycled pulp is used with (i.e. mixed with) fresh pulp to make paper. In that case we don't know the quantity of paper made "only" using recycled pulp. Because we dont know this number, we cannot draw any definitive conclusions about the quantities before and in 2010.
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In my opinion option A needs modification, i.e. 'over' or 'more than' should be used instead of using 'at least'.chidcguy 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 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.
The reason for that is as follows:
For last year,
RP = x and FP is >2x
For 2010,
RP is >y, where FP=y and y>2x
=>RP (in 2010)is definitely > 2x [Please note that it is not '>=' but it is strictly '>']
Also, all other options are incorrect by this reasoning.
