How many basic units of currency X are equivalent to 250 basi : Data Sufficiency (DS)

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

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Math Expert

Joined: 02 Sep 2009

Posts: 50613

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

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21 Jun 2018, 08:39

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94% (00:39) correct

6% (01:12) wrong

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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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(DS03422)

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

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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

o Therefore, 250 basic units of currency Y = \(\frac{100}{625} * 250\)

Hence, statement 1 is sufficient to answer

Analysing Statement 2

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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Joined: 24 Feb 2018

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

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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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Joined: 06 May 2018

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

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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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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