Following is the stockholders equity section of the 2017 balance sheet for Waitsburg Company:

STOCKHOLDERS' EQUITY	May 31, 2017
Common stock: $0.45 par value, authorized 600,000 shares; 175,000 shares outstanding	$ 85,500
Additional paid-in capital	532,000
Retained earnings	79,500
Treasury stock: 15,000 shares	(180,000)
Total stockholders' equity	$517,000

1. Compute the number of shares issued at May 31, 2017.
2. At what average issue price were the shares issued?
3. At what average cost were the treasury shares purchased?