the balance sheet at the end of the first 2 years of operations indicate the following

2012. 2011 total current assets 600000. 560000 total investments 60000. 40000 property plant & equip 900000. 700000 total current liab. 125000. 65000 long term liab. 350000. 250000 pref. 9% stock 100 par. 100000. 100000 common stock 10 par. 600000. 600000 paid in capital in excess of par common stock 75000. 75000 retained earnings. 310000. 210000

If net income is 115000 and interest exp is 30000 for 2012 what is the rate earned on total assets for 2012 round to one decimal point