Amount Adam need to invest = $12,802.04
In the question,
Amount Adam want to have in 18 years = $16,000
Time, t = 18 years
Rate of interest, r = 1.24% (compounded monthly)
So,
Effective rate of return, R = 1.24/12=0.1033%
Effective time, T = 18 x 12 = 216 years
Now,
Let us say the amount invested in the CD is = x
So,
Using the formula of Compound Interest, we can say that,
[tex]16000=x(1+0.00103)^{216}\\x=\frac{16000}{1.00103^{216}}\\x=\frac{16000}{1.2498}\\x=\$12,802.04[/tex]
Therefore, the amount Adam need to invest in the CD to achieve the Goal is,
$ 12,802.04.