In: Statistics and Probability
Under certain conditions, Swiss banks pay negative
interest they
charge you. (You didn't think all that secrecy was free?) Suppose a bank "pays"
minus−3.93.9%
interest compounded annually. Find the compound amount for a deposit of
$280 comma 000280,000
after
8
years.
SOLUTION:
From given data,
Under certain conditions, Swiss banks pay negative interest they charge you. (You didn't think all that secrecy was free?) Suppose a bank "pays" −3.9% interest compounded annually. Find the compound amount for a deposit of $280,000 after 8 years.
Where,
Principal amount (p) = $ 280000
Interest rate (r) = -3.9% = (compounded annually)
Time (t) = 8 years
Number of compounding periods per year = n =1
Here negative interest simply means bank is charging a fee for the safety of our deposit and so in case of negative interest bank takes compound interest on deposit rather then giving to us.
So,
Using compound interest formula
Compounded interest only = I = P (1 + r/n) (nt) - P
I = $ 280000 (1 + 3.9%/1) (1*8) - $ 280000
I = $380261.55 - $ 280000
I = $100261.55
Total compound amount = $100261.55