Final answer:
The diluted earnings per share for Piper Corporation for the year ended December 31, 2011, is $2.95 (rounded to the nearest penny).
Step-by-step explanation:
To calculate the diluted earnings per share for Piper Corporation, we need to consider the convertible preferred stock and the 9% convertible bonds. The net income for the year ended December 31, 2011, was $600,000. We will adjust this net income for the effect of the convertible securities.
First, we calculate the impact of the convertible preferred stock. The preferred stock is convertible into 30,000 shares of common stock. So, we multiply the number of convertible preferred shares by the conversion rate and subtract any dividends paid on the preferred stock: 15,000 x (30,000/15,000) - (15,000 x $3.00) = 30,000 - $45,000 = -$15,000.
Next, we calculate the impact of the 9% convertible bonds. The bonds are convertible into 75,000 shares of common stock. So, we multiply the number of convertible bonds by the conversion rate and subtract any interest expenses related to the bonds: $2,400,000 x (75,000/2,400,000) - ($2,400,000 x 9%) = $75,000 - $216,000 = -$141,000.
To calculate the diluted earnings per share, we subtract the negative impact of the convertible securities from the net income and divide by the total number of shares:
Diluted earnings per share = ($600,000 - (-$15,000) - (-$141,000)) / (150,000 + 30,000 + 75,000) = $2.95 (rounded to the nearest penny).