A person is a lobster fisherwoman and spends $50 a year on purchasing 5 kiloslobster at a store in 2010 ( the base year)and spends $60 a year on purchasing4 kilos of lobster at a store in 2013.

She earnsher living being a fisherwoman of lobster and her price for what she catches is $5 per kilo in 2010 and $6 per kilo in 2010:

(a) What is the inflation rate per year for what she pays for lobster in the store in 2013 compared to the base year in 2010?

(b) Is she better off or worse off in 2013 vs. 2010?