The increase in cost from 2009 to 2010 is 14.28%
In order to solve this question we will be taking the following example:
Let the cost of the house in 2008 = $1000
Increase in cost from 2008 to 2010 = 60%
Cost of the house in 2010 = 1000 + 60%*1000 = $1600
Increase in cost from 2008 to 2009 = 40%
Cost of the house in 2009 = 1000 + 40%*1000 = $1400
Increase in cost from 2009 to 2010 = 1600 - 1400 = $200
Percentage increase in cost from 2009 to 2010 = (Increase in cost/Cost of the house in 2009)*100
=(200/1400)*100
= 14.28% or 14%
Therefore there has been an increase of 14.28% in the cost of houses from 2009 to 2010
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