Bobs Chocolate Chips and More, a bakery specializing in gourmet pizza and chocolate chip cookies, started business October 1, 20X1. The following transactions occurred during the month of October.

1. Common stock of $90,000 was sold at par to start the business.
2. Equipment consisting of mixers and ovens was acquired October 1 for $30,000 cash. The equipment is expected to last five years, after which it is expected to be sold for $5,000. Management uses the straight-line method to calculate depreciation expense.
3. Ingredients costing $15,000 were purchased on account during the month and all but $5,000 was paid for by the end of the month.
4. Rent is $500 a month. October, November, and Decembers rent was paid October 5.
5. A payment of $800 for utilities was made during the month.
6. Sixty percent of the ingredients purchased in part c were prepared and sold for $35,000 on account; $26,000 was collected on accounts receivable during the month.
7. Wages of $5,200 were paid during the month. Moreover, wages for the last three days of the month amounted to $400 and will be paid during the first week of November.
8. Borrowed $12,000 from the bank for additional working capital requirements, and $3,000 was repaid by month-end. Interest on the unpaid loan balance amounted to $450 at the end of October and was paid on November 5.

Why is my rent expense wrong?