1.Betty borrows $50,000 at 10 percent annually compounded interest to be repaid in four equal annual installments. The actual end-of-year loan payment is ____________.

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

May i have the calculation thanks.