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matrenka [14]
3 years ago
13

A company will need ​$45000 in 5 years for a new addition. To meet this​ goal, the company deposits money in an account today th

at pays 7​% annual interest compounded quarterly. Find the amount that should be invested to total ​$45,000 in 5 years?
Mathematics
1 answer:
alina1380 [7]3 years ago
7 0
The general formula is
A = P ( 1 + \frac{I}{100}) ^ t

Where:
P = principal that becomes A in t years at the rate I% compound interest per annum.

Here the rate is 7% per annum (12 months)
So I is 1.75% per quarter (3 months)
So t will also be in quarters.

Put:
A = 45000
I = 1.75
t = 20 (since there are 20 quarters in 5 years)(5 years * 4 quarters per year)

45000 = P* \frac{1.75}{100} ^{20}
P = \frac{45000} {1.0175^{20} }
= \frac{45000}{1.41477819576}
≈$31807.12

Thus, the amount that should be invested is $31,807.12

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