Final answer:
To calculate the price-earnings ratio for Noble Computers, divide the current stock price of $81 by the earnings per share of $6, resulting in a P/E ratio of 13.5.
Step-by-step explanation:
The student is looking to calculate Noble Computer's price-earnings ratio (P/E ratio), which is defined as the market value per share divided by the earnings per share (EPS). To find the P/E ratio, we take the current trading price of $81 per share and divide it by the EPS of $6 to get a P/E ratio of 13.5.