Answer:
0.2840 or 28.40%
Explanation:
The formula for EAR= (1 + i/n)^n - 1
Where i= stated interest rate
n= number of compounding periods
In this case since the interest he paid is 1 cent, to convert it into percentage, we divide it by the dollar and multiply by 100
Note: 100 cent = 1 dollar
Therefore 4 dollars= 400 cents
To get the Interest rates= 1/400 x 100
= 0.25
n= 365 since we are computing daily
(1 + 0.25/365)^365 - 1
(1 + 0.000685)^365 - 1
(1.000685)^365 - 1
1.2840 - 1
0.2840 or 28.40%.
