Personnel in the finance department of Marconi Radio Group, Inc. have prepared the following estimates of the firm's component costs of capital. The firm always raises funds in increments comprised of 40% debt, 10% preferred equity, and 50% common equity. Assume that the firm's marginal tax rate is 21%. What is the firm's weighted average cost of capital? Report your answer in percentage terms rounded to 2 decimal place. (Ex. 1234 should be entered as "12.34")