Firms A, B, C, and D enter into a financial arrangement. Money flush firm A will pay expanding firms B and C each $2000000 today. B will pay D $4400000 three years from today. C will pay B $1600000 two years from today and D $700000 two years from today. Finally, D will pay A $6400000 six years from today. Calculate the yield rate or interest rate, to the nearest hundredth of a percent, that each firm experiences over the period of their involvement (6 years for A, 3 years for B, 2 years for C, and 4years for D)

No excel spreadsheets please I want to know what are the equations