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- anonymous

Sorry for all the questions!
In the first problem, "Credit Card Debt," how would one find the total principle paid? I know that in the program below, it is all the values of r added up, but I can't figure out how to deal with it in each separate time it loops.

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- anonymous

- chestercat

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- anonymous

## Calculate balance for compound interest.
x = float(raw_input('Enter current balance '))
y = float(raw_input('Enter annual interest rate '))
z = float(raw_input('Enter minimum monthly payment rate '))
for ans in range(1,13):
t = x * z
p = (y/12.0) * x
r = t - p
x = x - r
print 'Minumun monthly payment ', t
print 'principle paid ', r
print 'remaining balance ', x
print 'Total principle paid ', ~blank spot...~
print 'Balance ', x

- anonymous

Total principle paid, start with a var outside your loop.
So after you ask the user to input their x, y and z, name a new var and make it equal to 0.
a = 0
in the loop, you do something like
a = a + r
and then at the end when you are printing your results, you just print var a. I think this should get you your total principle paid over 12 months

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