Assume that using the Security Market Line the required rate of return (R A ) on stock A is found to be half of the required return (R B ) on stock B. The risk-free rate (R f ) is one-fourth of the...

Assume that using the Security Market Line the required rate of return (R_A) on stock A is found to behalf of the required return (R_B) on stock B. The risk-free rate (R_f) isone-fourth of the required return on A. Return on the market portfolio is denoted by R_M. Find theratio ofbeta
 of
A (b_A)tobeta of B (b_B).