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S&J Plumbing, Incorporated's income statement shows a net profit before tax of $468 and net sales of $7,482 for 2010. Total assets are at $3,244. The balance sheet lists the company’s equity for fiscal year ending 2010 as $1,746.

Calculate the following ratios for this company:

• Return on sales ratio (net profit margin)

• Return on assets (ROA)

• Return on equity (ROE)

  Write a paper of 2-3 pages about the efficiency of S&J Plumbing, Inc.