On 1 September 2019, Pink Boutique had total assets of $77,000 and total liabilities of $12,000. During the month, the company sold watches and purses on credit for $35,000, and paid expenses in cash totaling $21,000. Additionally, there was a cash outflow of $8,000 towards prepayment of an expense that will be incurred by the business during October 2019. Based only on this information and assuming no further transactions, how much is the businesss equity at the end of the month, that is, on 30 September?