Problem:

An investment advisor has recommended a $50,000 portfolio containing assets R, J, and K; $25,000 will be invested in asset R, with an expected annual return of 12 percent; $10,000 will be invested in asset J, with an expected annual return of 18 percent; and $15,000 will be invested in asset K, with an expected annual return of 8 percent. The expected annual return of this portfolio is

Please provide all calculation and formulas.