At the end of a financial year, the trial balance of a small company failed to agree and the difference was entered in a suspense account. Subsequently, the following errors were discovered:

(i) The sales day book had been undercast by £10.

(ii) A customer’s personal account has been correctly credited with £2 discount, but no corresponding entry was made in the discount column of the cash book.

(iii) Discounts allowed for July, amounting to £70 were credited instead of being debited to the discount account.

(iv) A debit balance on the account of D Bird, a customer, was carried forward £10 short.

(v) An old credit balance of £3 on a customer’s account (J Flyn) had been entirely overlooked when extracting the balances.

Required:

(a) Prepare, where necessary, the journal entries to correct the errors.

(b) Draw up a statement showing the impact of these errors upon the trial balance.