Why the debit and credit are 2400 in January 15?

Meyer Co. follows the practice of recording prepaid expenses and uneamed revenues in statement of financial position accounts. The company's annual accounting period ends on December 31, 2015. The following information concems the adjusting entries to be recorded as at that date. a. The Office Supplies account started the year with a $3,000 balance. During 2015, the company purchased supplies for $12,400, which was added to the Ofice Supplies account. The inventory af supplies available at December 31, 2015, totaled $2,640 b. An analysis of the company's insurance policies provided the following facts Policy Date of Purchase Months of Coverage Cost April 1, 2014 April 1, 2015 August 1, 2015 24 36 12 15,840 13,068 2.700 The total premium for each policy was paid in full (for all months) at the purchase date, and the Prepaid Insurance account was debited for the full cost. (Year-end adjusting entries for Prepaid Insurance were properly recorded in all prior years.) c. The company has 15 employees, who earn a total of $2,100 in salaries each working day. They are paid each Monday for their work in the five-day workweek ending on the previous Friday Assume that December 31, 2015, is a Tuesday, and all 15 employees worked the first two days of that week. Because New Year's Day is a paid holiday, they will be paid salaries for five full days on Monday January 6, 2016 d. The company purchased a building on January 1, 2015. It cost $855,000 and is expected to have a 545,000 residual value at the end of its predicted 30-year life. Annual depreciation is $27,000 e. Since the company is not large enough to occupy the entire building it owns, it rented space to a tenant at $2,400 per month, starting on November 1, 2015. The rent was paid on time on November 1, and the amount received was credited to the Rent Earned account. However, the tenant has not paid the December rent. The company has worked out an agreement with the tenant, who has promised to pay both December and January rent in full on January 15. The tenant has agreed not to fall behind again. 1, the company rented space to another tenant for $2,175 per month. The tenant paid five s' rent in adyance on that date. The payment was recorded with a credit to the Unearnmed Rent account. Required: 31 2015 (Omit the "$" sign in your