Ignacio, Inc., had after-tax operating income last year of $1,196,000. Three sources of financing were used by the company: $2 million of mortgage bonds paying 4 percent interest, $4 million of unsecured bonds paying 6 percent interest, and $10 million in common stock, which was considered to be relatively risky (with a risk premium of 8 percent). The rate on long-term treasuries is 3 percent. Ignacio, Inc., pays a marginal tax rate of 30 percent. Required: Calculate the after-tax cost of each method of financing. Enter your answers as decimal values rounded to three places.