1. At 30 June, H. Henry has been examining the amounts outstanding from his Accounts Receivable. One account I. Doubt, owes $1,650 (including GST) but pays only $550 on 30 June, stating that he will be unable to pay the balance. Henry decides to write off the balance of Doubt's debt as being unrecoverable. Lester is both a customer and a supplier. Henry wants to adjust for a $660 balance both owing to, and owed by, L. Lester. Required: (a) Record, as General Journal entries, the receipt of cash from Doubt and the write-off of the balance as irrecoverable. (b) Record the General Journal entry for the contra adjustment. (c) Post the entries to the General Ledger accounts and to the Subsidiary Ledger accounts for I. Doubt and L. Lester