Joanne C. answered 04/25/24
Enthusiastic Math and Science Tutor with over 20+ years of experience
Hi Latasha
Your Question: In the table below, P represents the initial investment. Complete the table below giving the amount P that must be invested at interest rate 8.5 % compounded monthly to obtain a balance of A = $ 70000 in t years.
Round your answer to the nearest cent or two decimal places.
A = P (1 + r/n)nt
P = Principal
r = rate
n = Number of times compounded in a year
t = time in years
For your problem,
A = 70000
r = 8.5% (So in the formula you use 0.085)
n = 12 ( compounded monthly is 12 times a year)
I don't see a table, so I'll just choose the values for t = 1, 5, 10, 20 years
If t = 1 Then
70,000 = P (1 + 0.085/12)12(1)
70000/ (1 + 0.085/12)12(1) = P
P = $64,315.13
If t = 5
70000/ (1 + 0.085/12)12(5) = P = 45,832.50
t = 10
70000/ (1 + 0.085/12)12(10) = P = 30,008.83
t = 20
70000/ (1 + 0.085/12)12(20) = P = 12,864.71
Hope this helps!