Question

in how many years will rs 900 amount to rs 1080 at 10% per annum

Answer 1

P=900. A=1080. I=1080-900=180. R=10% T=I*100/PR T=180*100/900*10 T=2 years

Answer 2

SI=P*N*R/100
here SI=1080-900=180
i.e.180=900*N*10/100
 =>180=90N
so,N=180/90=2
     hence it will take 2 years :)