Answer:
June 30, repurchase of 100 shares:
Dr Treasury stock 4,000
Cr Cash 4,000
Step-by-step explanation:
The other journal entries should be as follows
July 20, resale of 50 shares:
Dr Cash 2,300
Cr Treasury stock 2,000
Cr Additional paid in capital 300
August 1, resale of 20 shares:
Dr Cash 760
Dr Additional paid in capital 40
Cr Treasury stock 800