In: Accounting
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Answer:
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 (a)  | 
 Sales ($59,500 + $16,000 + $56,000)  | 
 $ 131,500  | 
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 Joint costs  | 
 (100,100)  | 
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 Net income  | 
 $ 31,400  | 
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 (b)  | 
 Sales ($190,700 + $34,700 + $215,400)  | 
 $ 440,800  | 
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 Joint costs  | 
 (100,100)  | 
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 Additional costs ($100,700 + $29,700 + $149,600)  | 
 (280,000)  | 
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 Net income  | 
 $ 60,700  | 
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 (c)  | 
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 Product 10  | 
 Product 12  | 
 Product 14  | 
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 Incremental revenue(1)  | 
 $ 131,200  | 
 $ 18,700  | 
 $ 159,400  | 
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 Incremental costs  | 
 (100,700)  | 
 (29,700)  | 
 (149,600)  | 
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 Incremental profit (loss)  | 
 $ 30,500  | 
 $(11,000)  | 
 $ 9,800  | 
(1)Sales value after further processing – Sales value @ split-off point
Products 10 and 14 should be processed further and product 12 should be sold at the split-off point.
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 (d)  | 
 Sales ($190,700 + $34,700 + $215,400)  | 
 $ 440,800  | 
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 Joint costs  | 
 (100,100)  | 
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 Additional costs ($100,700 + $149,600)  | 
 (250,300)  | 
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 Net income  | 
 $ 90,400  | 
Net income is $29,700 ($90,400 – $60,700) higher in (d) than in (b) because product 12 is not processed further, thereby increasing overall profit $29,700.