Need help with accounting class. Please show your work to help me better understand.

Chisels Company produces "collapse-proof" rod and reel cases. In preparing the current budget for the year, Chisels estimates a total of $400,000 in direct materials cost, $300,000 in direct labor cost, and \$300,000 in manufacturing overhead costs. Since the manufacturing process is highly automated, the company uses machine hours as the overhead application base. Estimated machine hours total 12,000. At the end of the period, Chisels reported actual results as follows: direct materials cost of \$410,000. direct labor cost of $250,000, manufacturing overhead cost $310,000, and machine hours used 12,500. Required: a. What is Chisels's predetermined overhead rate for the yeat? b. How much manufacturing overhead did Chisels apply to jobs during the year? c. If over- or underapplied overhead is closed to Cost of Goods Sold, what is the balance in the Manufacturing Ovethead account after the adjustment