You are given the cash flow series for two projects, Alt. A and Alt. B. Assume that F2 > F1, and X, Y, S1, and S2 are positive; the incremental rate of return (i*) on the additional investment in Alt. B can be calculated with the following expression: 0=F2+Y(P/A,i,6)+S2(P/F,i,6) 0=(F2F1)+(YX)(P/A,i,5)+(S2S1)(P/F,i,6) 0=(F2F1)(F/P,i,6)+(YX)(F/A,i,6)+(S2S1) 0=(F2F1)+(YX)+(Y+S2)(X+S1) 0=(F1F2)(F/P,i,6)+(XY)(F/A,i,6)+(S2S1) 0=F1+X(P/A,i,6)+S1(P/F,i,6)0=F2+Y(P/A,i,6)+S2(P/F,i,6) 0=F1+X(P/A,i,5)+S1(P/F,i,6)0=F2+Y(P/A,i,5)+S2(P/F,i,6)