SOLUTION: You have two investments. One you put $5,000 into that returns 10% compounded quarterly. The other investment you $10,000 into that returns 5% compounded quarterly. Will these two

Algebra ->  Finance -> SOLUTION: You have two investments. One you put $5,000 into that returns 10% compounded quarterly. The other investment you $10,000 into that returns 5% compounded quarterly. Will these two       Log On


   



Question 1090057: You have two investments. One you put $5,000 into that returns 10% compounded quarterly. The other investment you $10,000 into that returns 5% compounded quarterly. Will these two investments ever be worth the same amount? If so, in what month?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
one is 5000(1+.025)^4n
other is 10000(1+.0125)^4n
this is equivalent to (1.025)^n and 2(1.0125)^n
The first should catch the second at some point.
set them equal.
10000(1.0125)^n=5000(1.025)^n
2(1.0125)^n=1.025^n
2=(1.025/1.0125)^n
ln both sides
ln2= n ln (1.025/1.0125)=n*0.012227
0.693=0.012227 n
n=56.49 quarterly compoundings or just over 14 years or 168 months
graph%28300%2C300%2C50%2C60%2C-10%2C10%2C1.025%5Ex%2C2%2A%281.0125%29%5Ex%29
graph%28300%2C300%2C-10%2C70%2C-10%2C10%2C1.025%5Ex%2C2%2A%281.0125%29%5Ex%29