+0  
 
+1
145
1
avatar+231 

The population of Smallville increased by 20% from 2000 to 2005 and it increased by 30% from 2005 to 2010. By what percent did the population of Smallville increase from 2000 to 2010?

 May 2, 2020
 #1
avatar+112302 
+1

Let P be the beginning poulation

 

At the  end of  2005  the  new poulation is   (1.20)P

 

At the end of  2010, the population was  (1.30) [ (1.20)P]  = 1.56P

 

So....the poulation increased by  (1.56 - 1)  = .56 =  56%  from 2000 to 2010

 

cool cool cool

 May 2, 2020

21 Online Users

avatar