According to the Social Security progressive benefits replacement rates for 2014 below, How large will the monthly Social Security benefit be for a worker who had prior earnings of (a) $30,000 a year? $ (b) $80,000 a year? $ What is the marginal wage replacement rate for (c) The $30,000-per-year worker? 32 % (d) The $80,000-per-year worker? 15 %