maths compound interest
posted by minerva on .
find the compund interest on $2500 for one year at 4% per annum compounded halfyearly.
which of these is correct?
$2500(1 + 0.04)^2
or
$2500(1 + 0.02)^2
The second one. 2500(1+.02)^2
Since the interest is compounded semiannually you have to divide the annual rate of 4% by 2.
PS, the actual compound interest, which your question asks for, would really be 2500(1+.02)^2  2500
ok, thanks

if investing 50,000 over 20 yrs at 3%apr with compouind interest figures semiannually .figure using equation f(t)=p(1+r/n)nt

do you times the nt by the equation results to get the answer

find compound intrest if principal=2000,rate=20%per annum & time=2years3months

A=4000,12years
r=4% compounded semiannually 
business takes a loan of $40,000, set at 4% interest and will be paid off in 12 years. The bank wants to save the business money by calculatin the interest on a remaining balance basis in case he pays it off early. The annual payment si assumed to be $3500 of principal and 1600 of interest. after the 1st year $5540 is paid annually. What would be the total amount of interest paid?