Question

find the simple interest in rs 3000 at 6 % per anum for 3 years

Answer 1

SI = PTR/100
SI = 3000x6x3/100
    = 54000/100
    = 540 rs

Answer 2

si=ptr/100
si=3000*6*3/100=540

the simple will be 540 and amount 3000+540=3540:::::::::::::::: if it is helpful then say thanks to my few answer no need to make brain list