Answer:
$46.25; $50
$50; $50
Step-by-step explanation:
Given that,
Amount spent = $15,000
Current earnings = $2.50 per share
Current selling price = $50 per share
Shares outstanding = 4,000
Alternative 1: Extra dividend
 Price per share: 
= Current selling price - (Amount spent ÷ Shares outstanding)
= $50 - ($15,000 ÷ 4,000) 
= $46.25 
 Shareholder wealth = $50 
 
Alternative 2: Repurchase
 Price per share = $50 
 Shareholder wealth = $50