You are holding a stock with a beta of 2.0 that is

currently in equilibrium. The required rate of return on

the stock is 15% versus a required return on an average

stock of 10%. Now the required return on an average

stock increases by 30.0% . The riskfree rate is

unchanged. By what percentage would the required

return on your stock increase as a result of this event?

Can you solve this without using single variables? Thank you