Question

what is the principle of 10000 due in 2 years at 8% per annum compound interest according as the interest is paid early be semiannually

Answer 1

let principal be x

take r=4
n=4 for semiannually

10000=x[1+4/100]⁴
10000=x[1.04]⁴
10000=x*1.16985856
x=8548.05

Answer 2

let p=x
we know that interest=p×t×r/100
so 10000=x×2×8
=>x=10000/2×8
x=6250
hence,principle=6250rs