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In certain country the total weight of recycled

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Sonalika42
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In certain country the total weight of recycled [#permalink] New post   Updated on: 17 Sep 2016, 07:18
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In certain country the total weight of recycled newspapers increases annually by 0.79 million tons.


Quantity A
Quantity B
percent increase in the weight of recycled newspapers in 1989 over 1988
percent increase in weight of recycled newspapers in 1990 over 1989





A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
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A

Originally posted by Sonalika42 on 17 Sep 2016, 06:07.
Last edited by Sonalika42 on 17 Sep 2016, 07:18, edited 1 time in total.
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sandy
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Re: In certain country the total weight of recycled [#permalink] New post   17 Sep 2016, 06:42
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Hey,

There is something missing in the question. Please check.

Regards,
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Sonalika42
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Re: In certain country the total weight of recycled [#permalink] New post   17 Sep 2016, 07:18
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No, i have typed as it is printed in the book.Nothing else is mentioned,in explanation they have used plug in method, they took a random value for year 1988 and
then solved it.According to them answer is A.But i think answer should be D
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Albs
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Re: In certain country the total weight of recycled [#permalink] New post   03 Mar 2020, 15:38
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It A.

Create a scenario.

1988 - Let's make the original amount £1million tonnes
1989 - Will be £1.79 million (as it has increased by 0.79m tonnes)
1990 - Will be £2.58 million tonnes

Let's now do the percentage change between 1998 and 1989

(the difference between the two years / original amount) * 100
Therefore (0.79-1)/1 * 100 = 79% increase

Then the percentage change from 1989 to 1990.
(2.58 - 1.79) / 1.79 * 100 = 44% increase

WHY? As you can see when the denominator increases, the percentage gets smaller.
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