Answer:a. Calculation of the PV of the streams at an 8% discount rate:Formula:Present value = Future value xx1//(1+" rate ")^(^^)nWhere n is year of cash flowStream AStream BSo, the PV of the stream at 8% is $1,131.94So, the PV of the stream at 8% is $1,181.01b. Calculation of the PV of the streams at an 0% discount rate:Stream AStream BSo, the PV of the stream at 0% is $1450So, the PV of the stream at 0% is $1450 Answer:Calculation of the time it will $400 to double:Syntax we will use here =quad= NPER(rate,-pmt, pv,-fv, type ... See the full answer