Posted by Anonymous on Wednesday, August 26, 2009 at 8:55pm.
An excel spreadsheet is very helpful for these kinds of calculations.
The balance after 1 year is B1=B0*(1+r)-P, Where B0 is the initial balance and P is the payment=11000, r is the rate of interest = .05
After 2 years its B2 = B1*(1+r)-P = (B0*(1+r)-P)*(1+r) - P
= B0*(1+r)^2 - P(1 + (1+r))
so, by extension,
B10 = B0*(1+r)^10 - P*sum[(1+r)^(n-1)]
one equation, one unknown, solve for B0
part 1
PV=FV*PVif (N=10yrs. i=5%)
PV=1,000 X 7.722
PV= $84,942.00 ANSWER
PART 3
FV=PV X FVif 7% of 8 years
FV=33,000 X 1.718
FV= 56,694.00
How much would you repay the bank if you borrowed $7,900 at 4.3% annual interest for 6 years
5
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