Standard Limited produces three products, “Sta,” “And,” and “Ard,” which pass through the same process and can all be sold as good products. Total joint costs incurred amount to N3,710,000. Output and selling prices of the products are as follows:

Product Output (Units) Selling Price (N)
Sta 6,000 250
And 3,500 400
Ard 4,500 350

Required:
Apportion the joint costs and calculate the profit percentage using:
a. The physical unit basis. (10 Marks)
b. The sales value basis. (10 Marks)

(Total 20 Marks)