Solve for the missing amounts using a T-account for the balance sheet accounts in each situation. Assume that there is only one debit entry and one credit entry in the account during the month. Required: a. The Supplies account had a balance of $1,250 at the beginning of the month and $1,700 at the end of the month. The cost of supplies purchased during the month was $4,000. Calculate the cost of supplies used during the month.