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How many basic units of currency X are equivalent to 250 basi

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How many basic units of currency X are equivalent to 250 basi  [#permalink]

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New post 21 Jun 2018, 08:39
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2
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A
B
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D
E

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  5% (low)

Question Stats:

96% (00:40) correct 4% (01:12) wrong based on 563 sessions

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How many basic units of currency X are equivalent to 250 basic units of currency Y ?


(1) 100 basic units of currency X are equivalent to 625 basic units of currency Y.

(2) 2,000 basic units of currency X are equivalent to 12,500 basic units of currency Y.


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Re: How many basic units of currency X are equivalent to 250 basi  [#permalink]

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New post 21 Jun 2018, 10:53

Solution



To find:
    • The number of basic units of currency X, which are equivalent to 250 basic units of currency Y

Analysing Statement 1
    • As per the information given in statement 1, 100 basic units of currency X are equivalent to 625 basic units of currency Y
      o Therefore, 250 basic units of currency Y = \(\frac{100}{625} * 250\)

Hence, statement 1 is sufficient to answer

Analysing Statement 2
    • As per the information given in statement 1, 2000 basic units of currency X are equivalent to 12500 basic units of currency Y
      o Therefore, 250 basic units of currency Y = \(\frac{2000}{12500} * 250\)

Hence, statement 2 is sufficient to answer

Hence, the correct answer is option D.

Answer: D
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Re: How many basic units of currency X are equivalent to 250 basi  [#permalink]

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New post 21 Jun 2018, 11:42
Answer should be E right ? We can't find the relation if its a straight line or parabola or anything else? Even with both the statements included. Please help.
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Re: How many basic units of currency X are equivalent to 250 basi  [#permalink]

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New post 21 Jun 2018, 12:05
It is interesting to notice that both answer choices basically say the same, because statement two is a multiple of statement one (factor 20).

I am still choosing D, because a currency conversion is always a straight line. e.g. 1 EUR = 1,15 USD. Therefore, 2 EUR = 2,30 USD. The same reasoning applies to this question.
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Re: How many basic units of currency X are equivalent to 250 basi  [#permalink]

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New post 21 Jun 2018, 20:29
Aadhitthyaa wrote:
Answer should be E right ? We can't find the relation if its a straight line or parabola or anything else? Even with both the statements included. Please help.


Hello

I think in this case relation should be fairly simple and straight (line). If 'a' units of currency X are equal to 'b' units of currency Y, then
1 unit of currency X = b/a units of currency Y and
1 unit of currency Y = a/b units of currency X
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Re: How many basic units of currency X are equivalent to 250 basi   [#permalink] 21 Jun 2018, 20:29
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