The geological consulting firm of Gilbert, Marsh, and Kester prepares adjusting entries on a monthly basis. Among the items requiring adjustment on December 31, 2015, are the following:

1. The company has outstanding a $50,000, 9 percent, 2 year not payable issued on July 1, 2014. Payment of the $50,000 note, plus all accrued interest for the two-year loan period, is due in full on June 30, 2016.

2. The firm is providing consulting services to Texas Oil Company at an agreed upon rate of $1000 per day. At December 31, 10 days of unbilled consulting services have been provided.

a. Prepare the two adjusting entries required on December 31 to record the accrued interest expense and the accrued consulting revenue earned.

b. Assume that the $50,000 note payable plus all accrued interest are paid in full on June 30, 2016. What portion of the total interest expense associated with this note will be reported in the firm's 2016 income statement?

c. Assume that on January 30, 2016, Gilbert, Marsh, and Kester receive $25,000 from Texas Oil Company in full payment of the consulting services provided in December and January. What portion of this amount constitutes revenue earned in January?