Suppose that consumers purchase fish and cellphones. in 2010, one pound of fish costs $1, a cellphone costs $1 and the typical consumer buys 10 pounds of fish and 10 cellphones. in 2011, one pound of fish costs $2, a cellphone costs $0.50, and the typical consumer buys 5 pounds of fish and 20 cellphones. in 2012, one pound of fish costs $2.10, a cellphone costs $0.90, and the typical consumer buys 12 pounds of fish and 20 cellphones. using 2010 as the base year, the inflation rate between 2011 and 2010 is percent.