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The population of city n is 100,000 greater than the population of cit

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The population of city n is 100,000 greater than the population of cit  [#permalink]

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New post 08 Oct 2018, 12:38
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The population of city n is 100,000 greater than the population of city m. If both cities increase in population by x percent in a given year, how much greater is the population of city n than the population of city m after the increase?
1) x =10
2) The original population of city m was 1,4 of the original population of city n.

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Re: The population of city n is 100,000 greater than the population of cit  [#permalink]

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New post 08 Oct 2018, 18:27
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The population of city n is 100,000 greater than the population of city m. If both cities increase in population by x percent in a given year, how much greater is the population of city n than the population of city m after the increase?
So n-m=100000

1) x =10
So m becomes 110m/100 or 1.1m and n becomes 1.1n
So increase = 1.1n-1.1m=1.1(n-m)=1.1*100000=110000
Sufficient

2) The original population of city m was 1,4 of the original population of city n..
What does 1,4 mean.
Anyway, since we don't know X , it is not sufficient
Insufficient

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Re: The population of city n is 100,000 greater than the population of cit   [#permalink] 08 Oct 2018, 18:27
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The population of city n is 100,000 greater than the population of cit

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