A dozen eggs cost $1.03 in December 1980 and $2.75 in December 2015. The average wage for workers in private industries was $7.13 per hour in December 1980 and $21.26 in December 2015.

By what percentage did the price of a dozen eggs rise?

63%

167%

172%

By what percentage did the wage rise?

30%

67%

198%

In order to earn enough to buy a dozen eggs, a worker had to work ____ minutes in December 1980 and ____ minutes in December 2015.

Workers' purchasing power in terms of eggs ___ between 1980 and 2015.