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dusya [7]
3 years ago
15

After 7 years, Abner earned $1575 in simple interest from a CD into which he initially deposited $6000. What was the annual inte

rest rate of the CD?
Mathematics
2 answers:
allsm [11]3 years ago
7 0

The annual interest rate of the CD was 3.75 %

<u><em>Explanation</em></u>

Simple Interest formula is : I =P*r*t , where I= Amount of interest, P= Principal/Initial amount, r= rate of interest in decimal form and t= time in years

Here Abner earned $1575 in simple interest and he initially deposited $6000. So, I=1575 dollar and P= 6000 dollar

Also given that, t = 7 years

Now according to the formula...

I= P* r*t\\ \\ 1575= 6000*r*7\\ \\ 1575= 42000*r\\ \\ r= \frac{1575}{42000}= 0.0375

For getting the interest rate in percentage, we will multiply it by 100%. So... (0.0375 × 100) % = 3.75 %

So, the annual interest rate of the CD was 3.75 %

Radda [10]3 years ago
6 0
The answer is C. 3.75%
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