Calculate cash proceeds from the pretend exercise.
Cash proceeds = Exercise price (\times) number of shares.
15 \times 10,000 = 150,000
Pretend to buy back shares at the average market price.
Buyback = \frac{\text{Cash Proceeds}}{\text{Market Price}} = \frac{150,000}{25} = 6,000
Common Mistake: Students incorrectly use the 6,000 as the denominator.
Need the net increase in the denominator.
Net increase = New shares - Buyback shares.
10,000 - 6,000 = 4,000
Start with the basic EPS formula and incorporate the numerator and denominator effects of the options.
\frac{113,000 + 0}{50,000 + 4,000} = \frac{113,000}{54,000} = 2.09
Diluted EPS = $2.09