Question

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.

Answer 1

## 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

Answer 2

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