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# From 2000 to 2002, the number of asthmatic children in a certain city

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Joined: 02 Sep 2009
Posts: 59726
From 2000 to 2002, the number of asthmatic children in a certain city  [#permalink]

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27 May 2018, 10:56
00:00

Difficulty:

15% (low)

Question Stats:

73% (00:40) correct 27% (00:41) wrong based on 92 sessions

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From 2000 to 2002, the number of asthmatic children in a certain city increased by what percent?

(1) In 2000, 10% of the children in the city were asthmatic

(2) In 2002, 12% of the children in the city were asthmatic.

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From 2000 to 2002, the number of asthmatic children in a certain city  [#permalink]

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27 May 2018, 12:14
1
1

Solution

To find:
• From 2000 to 2002, the number of asthmatic children in a certain city increased by what percentage?

Analysing Statement 1
• As per the information provided in statement 1, in 2000, 10% of the children in the city were asthmatic
o From this statement, we cannot determine the exact number of asthmatic children in either of 2000 or 2002
Hence, statement 1 is not sufficient to answer

Analysing Statement 2
• As per the information provided in statement 2, in 2002, 12% of the children in the city were asthmatic
o From this statement, we cannot determine the exact number of asthmatic children in either of 2000 or 2002
Hence, statement 2 is not sufficient to answer

Combining Both Statements
• If we combine both the statements, we only have the respective percentages of asthmatic children in each of the year 2000 and 2002
o But we don’t have their exact values neither the total population in those 2 years
Hence, the correct answer is option E.

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Re: From 2000 to 2002, the number of asthmatic children in a certain city  [#permalink]

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05 Oct 2018, 18:32
Statement (1): insufficient. This only provides information about 2000, so it can't be sufficient. Eliminate choices (A) and (D).

Statement (2): insufficient. This only provides information about 2002, so it can't be sufficient. Eliminate (B).

Statements (1) and (2): insufficient. Since the total number of children in the city may have changed from 2000 to 2002, we cannot assume that the increase in the number of asthmatic children was 12% - 10% = 2%. There is no way to calculate the number of asthmatic children in each of the two years, and thus we do not have sufficiency. Choice (E) is correct.

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Re: From 2000 to 2002, the number of asthmatic children in a certain city   [#permalink] 05 Oct 2018, 18:32
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# From 2000 to 2002, the number of asthmatic children in a certain city

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