After a series of calculations, I found out that the interest he has to pay in total would be <span>$117,484.77.
You might use my answer in reviewing by using your solution also.
I hope my answer has come to your help. God bless and have a nice day ahead!
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Answer:

Step-by-step explanation:
The given expression is

Recall and use the following property to factor the numerator;


This will give us;

Simplify;

Find the GCF of both numerator and denominator and then divide both the denominator and numerator by that and you will get the simplified fraction.