B23 Decreasing Annuity

Question 1

what is the eqn for a decreasing annuity immediate?

Answer 1

k (Da) angle n = (n - a angle n)/i

Note the coeffeicent should be the amt of the last pmt

Question 2

how do you find the decreasing annuity immediate?

Answer 2

N = n
I/Y = n
PMT = 1
FV = 0
CPT PV
+ n
divide by i
Mult by k