An investor deposits a fixed amount of money in a bank at the beginning of every three months of 2021, then returns and withdraws a fixed amount at the end of every two months of 2021. If you know that his total deposits at the end of 2021 amounted to 7500 dinars and that his total withdrawals are in The year 2021 amounted to 5900 dinars, and if you know that the simple interest rate for both cases is 4% annually, the required amount is calculated in the case of depositing 1- Calculate the fixed amount in the case of withdrawal 2- Calculate the investor’s balance at the end of the year