A new bank offers you a 0% intro APR on balance transfers. all transfers must be completed and first four months. After that the variable APR will be 24%, based on your credit score remaining above 650. If you transfer a balance with this offer, after your 0% intro purchase APR expires, both new purchases and unpaid purchase balances will automatically accrue interest until all balances, including your transferred balance, are paid in full. You have transferred $600 to this account and paid half before the fourth month. You then charge $350 in the fifth month. What is your balance at the end of the fifth month if you have made no additional charges, payments or transfers?