Calculate the balance of retained earnings after closing entries.

All information provided

Company B Adjusted Trial Balance Jan. 31,2018 Debit S30,000 20,000 30,000 Credit Cash Accounts Receivable Equipment Accumulated Depreciation Accounts Pavable Notes Payable Service Revenue Sales Revenue Depreciation Expense Salaries Expense Retained Earnings Common Stock S10,000 20,000 10,000 10,000 10,000 20,000 30,000 40,000 30,000 S130,000 Total S130,000