Final answer:
Stockholders' equity is calculated by summing common stock, paid-in capital in excess of par, retained earnings, and subtracting treasury stock. The total Stockholders' equity in this case is $640,000.
Step-by-step explanation:
The total Stockholders' equity can be calculated by adding the value of common stock, paid-in capital in excess of par, and retained earnings, then subtracting the treasury stock from this sum. Based on the provided accounts, the calculation is as follows:
- Common stock: $375,000
- Paid-in-capital in excess of par: $90,000
- Retained earnings: $190,000
- Less: Treasury stock: $15,000
So the total Stockholders' equity is $375,000 + $90,000 + $190,000 - $15,000 = $640,000.
Therefore, the correct answer is a) $640,000.