Answer:
Step-by-step explanation:
The journal entries are shown below:
a. Treasury stock A/c Dr $156,000  (6,000 shares × $26)
 To Cash A/c $156,000 
(Being the purchase of treasury stock is recorded)
b. Cash A/c Dr $116,000 (4,000 shares × $29) 
 To Treasury Stock A/c $10,4000  (4,000 shares × $26) 
 To Paid in capital - Treasury stock $12,000
(Being treasury stock is sold at higher price and the remaining amount would be credited to the paid in capital account) 
c. Cash A/c Dr $44,000  (2,000 shares × $22) 
Paid in capital - Treasury stock $8,000 
 To Treasury Stock A/c $52,000  (2,000 shares × $26) 
(Being treasury stock is sold at lower price)