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Jack and Carlie each deposit $17,250 into accounts that earn 6% interest for 6.5 years. Jack's account earns annual simple interest and Carlie's account earns annual compound interest. Who will earn more interest after 6.5 years, and how much more interest will they earn?

1 Answer

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Okay, let's calculate the interest earned by each person over 6.5 years.

Jack's account earns annual simple interest, so the formula for simple interest is:

I = P * r * t

where:
I = interest earned
P = principal (initial amount deposited)
r = annual interest rate
t = time in years

Using the given values, we get:

I = 17,250 * 0.06 * 6.5
I = $6,332.50

Therefore, Jack will earn $6,332.50 in simple interest over 6.5 years.

Carlie's account earns annual compound interest, so the formula for compound interest is:

A = P * (1 + r/n)^(n*t)

where:
A = amount after time t
P = principal (initial amount deposited)
r = annual interest rate
n = number of times interest is compounded per year
t = time in years

Using the given values, we get:

A = 17,250 * (1 + 0.06/1)^(1*6.5)
A = $27,943.93

The amount after 6.5 years is $27,943.93, which includes the principal and compound interest earned. To find the amount of interest earned, we subtract the principal:

Interest earned = A - P = $27,943.93 - $17,250 = $10,693.93

Therefore, Carlie will earn $10,693.93 in compound interest over 6.5 years.

So, Carlie will earn more interest than Jack, and the difference between the interest earned is:

$10,693.93 - $6,332.50 = $4,361.43

Therefore, Carlie will earn $4,361.43 more interest than Jack over 6.5 years.
User Osman Goni Nahid
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