Tiger Corp's stock had a required return of 11.75% last year, when the risk-free rate was 4.50% and the market risk premium was 5.00%. Then an increase in investor risk aversion caused the market risk...

Tiger Corp's stock had a required return of 11.75% last year, when the risk-free rate was 4.50% and the market risk premium was 5.00%.  Then an increase in investor risk aversion caused the market risk premium to rise by 1.00%.  The risk-free rate and the firm's beta remain unchanged.  What is the company's new required rate of return?  (Hint: First calculate the beta, then find the required return.)