Wilma saves 12,000 at the end of every six months for 10 years. Assume 10% compounded semiannually and find the present value

Answer 1

A=biannual payment = 12,000
APR=10% => i=10%/2=0.05
n=number of periods (each six-months) = 10*2=20

Present value
P=A*((1+i)^n-1)/(i(1+i)^n)
You can substitute values and compute.
P is the same as the amount borrowed in a mortgage with a semi-annual payment of 12,000.

Post for an answer check if you wish.