Assume both portfolios A and B are well diversified, that E(rA)=14% and E(r)=14.8%. If the economy has only one factor, and A=1 while Bp=1.1. What must be the risk-free rate?

Consider the following data for a one-factor economy. All portfolios are well diversified. Suppose another portfolio E is well diversifed with a beta of 2/3 and expected return of 9%. Construct an arbitrage strategy by investing $1 in the long position and $1 in the short position. What is the profit from this arbitrage strategy