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coldgirl [10]
3 years ago
13

Sophia's credit has an APR of 20.87 % and it just changed its compounding. From monthly to daily what will happen to the effecti

ve interest rate charged to Sophia
Mathematics
1 answer:
Rashid [163]3 years ago
3 0

Answer:

It will increase by 0.2%.

Step-by-step explanation:

In this problem we need to solve for the monthly interest first.

We use the formula:

r = (1+\dfrac{i}{n})^{n}-1

Now that we have the formula we now define our variables.

i = 20.87% or 0.2087

n = 12

r=(1+\dfrac{0.2087}{12})^{12} - 1

r=(1+\dfrac{0.2087}{12})^{12}-1

r=(1+\dfrac{0.0174})^{12}-1

r=(1.0174})^{12}-1

r= 1.2299-1

r= 0.2299 or 23%

Now we have to find the daily interest rate.

r=(1+\dfrac{0.2087}{365})^{365}-1

r=(1+\dfrac{0.2087}{365})^{365}-1

r=(1+0.00057178082)^{365}-1

r=(1.00057178082)^{365}-1

r= 1.2320-1

r= 0.2320 or 23.20%

23.20% - 23% = 0.20% increase.

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