Tannin corporation has $60 million of outstanding equity and $20 million of bank debt. The bank debt costs 6% per year. The estimated equity beta is 1.2. If the market risk premium is 5% and the risk-free rate is 3%, compute:

1. It's levered cost of equity for the current debt level in percentage.

2 what is Tannin's unlevered cost of equity for the current debt level in percentage.

3. calculate Tannin's levered cost of equity in percentage if the company borrows $10 million dollar more and use the proceeds to buyback/retire its equity.