Answer:
In the salary expense account, the posting reference that will be found is Cash 11.
Explanation:
This posting reference shows that the contra entry was made in the Cash account which has a reference number of 11. The Posting Reference is a field that facilitates cross-referencing (showing the other account involved in the transaction) or interlinking between the journal and the ledger in the posting process. Posting reference columns are present in both the journal and the ledger. It is also known as the Folio. This is because with the double entry system of accounting, each transaction must reflect at least two accounts that are affected on the debit side and the credit side.