If Grant started the month with $20 of accounts payable, what is the company's amount of accounts payable at the end of the month?

dr. Cash 600 cr. Common Stock 600 dr. Equipment 600 cr. Cash 200 cr. Loans Payable 400 dr. Supplies 50 cr. Accounts Payable 50 dr. Salary Expense 75 cr. Salary Payable 75 dr. Utilities Expense 15 cr. Cash 15 dr. Cash 350 dr. Accounts Receivable 450 cr. Service Revenue 800 dr. Accounts Payable 30 cr. Cash 30 dr. Cash 250 cr. Accounts Receivable 250 dr. Dividends 10 cr. Cash 10