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# If the population of a city increases by 100/9% per year

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VP
Joined: 18 Dec 2017
Posts: 1005
Location: United States (KS)
GMAT 1: 600 Q46 V27
If the population of a city increases by 100/9% per year  [#permalink]

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04 Dec 2019, 12:12
00:00

Difficulty:

25% (medium)

Question Stats:

93% (02:04) correct 7% (05:15) wrong based on 14 sessions

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If the population of a city increases by $$100/9$$% per year and If in 2013, the population of the city is 10530 then Find the difference between the population of the city in 2015 and 2014.

A. 1300
B. 1400
C. 1700
D. 1800
E. 2000

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Joined: 20 Mar 2018
Posts: 433
Location: Ghana
Concentration: Finance, Real Estate
If the population of a city increases by 100/9% per year  [#permalink]

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04 Dec 2019, 13:52
Increase by 100/9% per year = 100/9•1/100=1/9 (the increase)
Hence multiplier = (9/9+1/9)=10/9

Year Population
| 2013 | 10530

| 2014 | 10/9•10530 =11700

|2015 | 10/9•11700 = 13000

Difference in population 13000-11700 = 1300

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If the population of a city increases by 100/9% per year   [#permalink] 04 Dec 2019, 13:52
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# If the population of a city increases by 100/9% per year

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