Question

how much amount will you pay for a loan of Rs 3000 from a bank if the interest rate is 12%

Answer 1

You Haven't Specified the loan term and whether it's simple interest or compound interest

Considering simple interest for a period of 1 year,

P be the Sum of Money Borrowed
I be the rate of interest
N be the number of years

Amount Payable = (P*I*N) /100= (3000*12*1)100
= 360.