Answer:
Oct 1
Dr Accounts receivable 70,000
Cr Bed debts expense 70,000
(Accounts receivable is an asset and when it increases, they are debited. When expenses increase, they are credited.)
Oct 30
Dr Cash 70,000
Cr Accounts receivable 70,000
(Cash is an asset and when it increases, it is debited. Accounts receivable is an asset and when it decreases, they are credited)