The table below shows a book balance sheet for the Wishing Well Motel chain. The company$$s long$-$term debt is secured by its real estate assets, but it also uses short$-$term bank loans as a permanent source of financing. It pays $10\%$ interest on the bank debt and $9\%$ interest on the secured debt. Wishing Well has $10$ million shares of stock outstanding, trading at $$90$ per share. The expected return on Wishing Well$$s common stock is $18\%.($Table figures in $ millions.$)$

Cash and marketable securities $ $100$ Bank loan $ $280$

Accounts receivable $200$ Accounts payable $120$

Inventory $50$ Current liabilities $ $400$

Current assets $ $350$

Real estate $2,100$ Long$-$term debt $1,800$

Other assets $150$ Equity $400$

Total $ $2,600$ Total $ $2,600$

Calculate Wishing Well$$s WACC. Assume that the book and market values of Wishing Well$$s debt are the same. The marginal tax rate is $21\%.$

Note: Do not round intermediate calculations. Enter your answer as a percent rounded to $1$ decimal place.