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jasenka [17]
3 years ago
7

Determine the interest earned on a 3 and 1/4 year investment of $2880 at a rate of 4.5%

Mathematics
1 answer:
sladkih [1.3K]3 years ago
6 0

Answer:

The interest earned is $421.2.

Step-by-step explanation:

This is a simple interest problem.

The simple interest formula is given by:

E = P*I*t

In which E is the amount of interest earned, P is the principal(the initial amount of money), I is the interest rate(yearly, as a decimal) and t is the time.

In this question:

P = 2880, I = 0.045, t = 3 + \frac{1}{4} = 3.25

So

E = P*I*t

E = 2880*0.045*3.25

E = 421.2

The interest earned is $421.2.

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