Answer:
Journal Entries for Pina in 2020:
July 1:
Debit Accounts Receivable with $2,050
Credit Sales Account with $2,050
Being sales on account
Sept 1:
Debit Cash with $2,050
Credit Accounts Receivable with $2,050
Being cash received
Oct 15:
Debit Cash with $320
Credit Installation Service Income with $320
Being cash receipt for installation service
Step-by-step explanation:
a) The value of actual sales excluding installation is equal to $2,050. So, the Sales and Accounts Receivable are credited and debited respectively with this amount.
b) Installation service was completed on October 15, 2020. The element of the contract value $320 is recognized in the accounts on this date and the respective cash and income accounts are debited and credited.