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Of the following, which is closest to the increase from 1975 to 1980

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Of the following, which is closest to the increase from 1975 to 1980  [#permalink]

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New post 11 Dec 2018, 08:25
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A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

67% (01:19) correct 33% (02:02) wrong based on 46 sessions

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Of the following, which is closest to the increase from 1975 to 1980 in the amount received by the processor in producing 6 ounces of frozen orange juice?

(A) $0.03
(B) $0.05
(C) $0.06
(D) $0.08
(E) $0.13

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Re: Of the following, which is closest to the increase from 1975 to 1980  [#permalink]

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New post 11 Dec 2018, 09:48
1
simply,
in 1980, 0.7*18.0/100 = 0.1260
in 1975, 0.3*31.7/100 = 0.0951
Difference = 0.0309
so A

(usually, using approximation would be faster, by because the values of choices are so near to each other, precision is a better approach,
for example, if we use approximation,
in 1980, 0.7*20/100 = 0.140
in 1975, 0.3*32/100 = 0.096
Difference = 0.044
so you would be confused either to choice 0.03 or 0.05, or you may end up choosing 0.05 as a nearer value, which is a wrong answer)
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Re: Of the following, which is closest to the increase from 1975 to 1980  [#permalink]

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New post 24 Dec 2018, 21:28
Can someone please explain this question in simpler terms?
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Of the following, which is closest to the increase from 1975 to 1980  [#permalink]

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New post 24 Dec 2018, 23:42
1
kanakdaga wrote:
Can someone please explain this question in simpler terms?


Greetings kanakdaga

I am not an expert, so let's help together step by step.

I will start with explaining the question itself:

The left pie represents the cost of 6 ounces of orange juice in 1975 which is $ 0.3

the $ 0.3 comes from the different stages through which the orange juice went through.
there are 5 stages according to the pie chart : farmer, retailer, wholesaler, processor, transporter.

the farmer is 28.1% of $ 0.3
the retailer is 21.7% of $ 0.3
the wholesaler is 11.4% of $ 0.3
the processor is 31.7% of $ 0.3 --------> so the cost incurred by the processor = (31.7/100) * (0.3) = $ 0.0951
the transporter is 7.1% of $ 0.3

the sum is 100% which represents the $ 0.3

then repeat the process on the right pie, then find the difference
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Of the following, which is closest to the increase from 1975 to 1980 &nbs [#permalink] 24 Dec 2018, 23:42
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Of the following, which is closest to the increase from 1975 to 1980

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