Calculate the expected average rate of return for this financial accounting question

Subject general accounting

Timberline worked on four jobs during its first year of operation: Nos. 501, 502, 503, and 504. Nos. 501 and 502 were completed by year-end, and No. 501 was sold at a profit of 35% of cost. A review of Job No. 503’s cost record revealed direct material charges of $18,000 and total manufacturing costs of $23,400. If Timberline allocated overhead at 140% of direct labor cost, the overhead allocated to Job No. 503 must have been __. Need answer

How much was the firm's taxable income or earnings before taxes on this financial accounting question?

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Please see an attachment for details general Accounting question

What is the firm's net profit margin?

Timberline worked on four jobs during its first year of operation: Nos. 501, 502, 503, and 504. Nos. 501 and 502 were completed by year-end, and No. 501 was sold at a profit of 35% of cost. A review of Job No. 503’s cost record revealed direct material charges of $18,000 and total manufacturing costs of $23,400. If Timberline allocated overhead at 140% of direct labor cost, the overhead allocated to Job No. 503 must have been __.

Riverstone Ltd