Create Journal Entries for the following transactions:

1. On June 10th, the company purchased $800 of office supplies on credit from Walmart; payment is to be made within 30 days.
2. On June 14th, the company completed $600 of work for customer on account.
3. On June 16th, the company received one-third of the amount owed from the June 14th transaction.
4. 4. On June 28th, the company paid off half the amount owed to Walmart.