Compute the present value of a $240 cash flow for the following combinations of discount rates and times: a. r =...

Compute the present value of a $240 cash flow for the following combinations of discount rates and times: a. r = 12% t = 8 years present value $_________ b. r = 12% t = 16 years present value $_________ c. r = 6 % t = 8 years present value $_______ d. r = 6 % t = 8 years present value $_________