When Samuel Pepys, the British diarist, lent his friend Lady Sandwich £100 in 1668, he charged her 6 percent interest. If the loan was due at the end of 1 year, how much would Lady Sandwich have had to pay if interest was (a) compounded annually, (b) compounded semiannually, (c) compounded continuously?
A(t) = P (1 + r/n)^nt
here's is the formula
give it a try
P = principal
r = rate
n = term
n = 1 for annually
n = 2 for semiannually