A person deposited a principal of `Rs3000` in a fixed depoosit scheme, in a bank under this condition that the principal will amount double at the end of `6` years. Find the rate of simple interst in percent per annum of the fixed deposite scheme. Due to special circumstance, the person have forced to withdraw all of his deposited money `2` years before the term of condition of period of time and so that the bank gave him interest at a rate of `5%` less than the previous. Determine the amount of money which the person will get back from the bank.