SOLUTION: Tuan deposited $1,500 in a saving account that pays an annual rate of 7% interest compounded semiannually. Adela deposited $1,500 in a savings account that pays 8% interest annuall

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Question 388310: Tuan deposited $1,500 in a saving account that pays an annual rate of 7% interest compounded semiannually. Adela deposited $1,500 in a savings account that pays 8% interest annually. How much more money will Adela have than Tuan at the end of 1 year?
Found 2 solutions by solver91311, lwsshak3:
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


I already answered this one.

Tuan's account at the end of the year:



Adela's account at the end of the year:



Do the calculator work and compare the results.


John

My calculator said it, I believe it, that settles it
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Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!

The best way to solve this problem is to use the compound interest formula,
A=P(1+R/n)^n,which states that the amount of interest (A) earned is equal to the principal(P) times one plus the interest per period raised to the number of compound periods(n)
For Tuan: P=1500(amt deposited),R=7% or .07, 2 compound periods
For Adela: P=1500(amt deposited),R=8% or .08, one period
Tuan earned = 1500(1+.07/2)^2=1606.84
Adela earned = 1500x(1+.08/1)^1=1620
Ans: Adela earned $13.16 more in interest than Tuan after one year.