Companies A and B are valued as follows:

	Company A	Company B
Shares outstanding	2,000	1,000
Earing per share	10	10
Price per share	100	50

Company A now acquires B by offering one (new) share of A for every two shares of B (that is, after the merger, there are 2500 shares of A outstanding). If investors are aware that there are no economic gains from the merger, what is the price-earnings ratio of A's stock after the merger?