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?
x = original pop
1.2 x = pop 2005
1.2 x * 1.3 = 1.56 x =pop 2010 population increase = 56 %
