Jocarro Company Has a Job Costing System Jocarro Applies Overhead to Production on the Basis of Direct

Jocarro Company has a job costing system.The following items appeared in the work-in-process account during February:
$\begin{array}{|l|l|}\hline \text { February 1, balance } & \$ 20,000 \\\hline \text { Materials placed into production } & ? \\\hline \text { Direct labour (4,000 hours) } & \$ 120,000 \\\hline \text { Factory overhead applied } & \$ 96,000 \\\hline \text { Cost of goods manufactured } & \$ 400,000 \\\hline \text { February 28, balance } & \$ 16,000 \\\hline\end{array}$ Jocarro applies overhead to production on the basis of direct labour hours.Job XX,the only job in process on February 28,has been charged $10,600 materials cost and has 100 labour hours of direct labour time assigned to it.
a.Determine the predetermined factory overhead rate for Jocarro Company.
b.Determine the amounts of materials,direct labour,and factory overhead included in the February 28,work in process.
c.Determine the amount of materials placed into production during February.