Please help with part 4 and part b.

Lean Accounting Power Audio Inc, manufactures audio speakers. Each speaker requires $111 per unit of direct materials. The speaker manufacturing assembly cell includes the following estimated costs for the period: Speaker assembly cell, estimated costs: The operating plan calls for 180 operating hours for the period. Each speaker requires 15 hninutes of cell process time. The unit selling price for each speaker is $301. During the period, the following transactions occurred: 1. Purchased materials to produce 505 speaker units. 2. Applied conversion costs to production of 480 speaker units. 3. Completed and transferred 460 speaker units to finished goods. 4. Sold 440 speaker units. There were no inventories at the beginning of the period. a. Joumalize the summary transactions (1)-(4) for the period. Round the per unit cost to the nearest cent and use in subsequent computations. If an amount box does not require an entry, leave it blank. a. Journalize the summary transactions (1) (4) for the period. Round the per unit cost to the nearest cent and use in subsequent computations. If an amount box does not require an entry, leave it blank. Check My Work a. In lean manufacturing, there are fewer transactions to record, thus simplifying the accounting system, Some accounts are combined. For example, all in-process work is combined with raw materials to form a new account, Raw and in Process (RIP) Inventory and direct labor is also combined with other costs to form a new account titled Conversion Costs. Indirect labor is directiy assigned to product cells; thus, less factory overhead is allocated to products. The cell conversion rate is similar to a predetermined factory overhead rate, except that it includes all conversion costs in the numerator. b. Determine the ending balance of raw and in process inventory and finished goods inventory. Raw and in Process Inventory, ending balance : Finlshed Goods Inventory, ending balance s