Comprehensive problem on unit costs, product costs. Tampa Office Equipment manufactures and sells metal shelving. It began operations on January 1, 19_4. Costs incurred for 19 4 are as follows (V stands for variable; F stands for fixed):

Cost incurred in 19_4:

Direct materials used $140,000 V Direct manufacturing labor costs 30,000 V Plant energy costs 5,000 V Indirect manufacturing labor costs 10,000 V Indirect manufacturing labor costs 16,000 F Other indirect manufacturing costs 8.000 V Other indirect manufacturing costs 24,000 F Marketing, distribution, and customer-service costs 122.850 V Marketing, distribution, and customer-service costs 40.000 F Administrative costs 50,000 F Variable manufacturing costs are variable with respect to units produced. Variable marketing, distribution, and customer-service costs are variable with respect to units sold. Inventory data are:

Required 1. Direct materials inventory, total cost, December 31, 19_4.
2. Finished goods inventor)', total units, December 31, 19_4.
3. Selling price per unit, 1 94.
4. Operating income, 1 9_4. Show computations.