1. Assume a firms net income is $5,000, its revenue is $100,000, its gross profit is $50,000. Assume average shareholder equity is $50,000. Income from operations is $30,000. Assume interest expense is $5,000 and tax rate is 20%. Assume average total assets is $180,000. Operating profit margin is closest to which of the following?

   		30%
   		40%
   		20%
   		50%