[Daily Brain Teasers] Easy Math Problem - 23 January

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Lavesh Rawat

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Jan 23, 2013, 2:26:10 AM1/23/13
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Easy Math Problem  - 23 January


In a strange city , there are just 2 houses.


If one person from house1 goes to house2, then the population of house2 is twice the population of house1.

While if one person from house2 goes to house1, then the population of house2 is same as the population of house1.


what the population of each house ?


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Solution

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Prem Mangal

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Jan 23, 2013, 3:26:38 AM1/23/13
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2*(house1-1)=house2+1

house1+1=house2-1
house1+2=house2
house1+2=2house1-3
house1=5
Therefor house2=7


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