Crab Ltd is already in business and has prepared its balance sheet and profit statement for 19X 1. The following data has not been reflected in these statements. Explain what effect there would be on the profit statement and balance sheet if the data was included:

(a) Debtors are valued at £1000 in the balance sheet but 10% are expected to be unable to pay.

(b) A vehicle is valued in the balance sheet at £60 but its resale value is nil.

(e) The firm owes £200 for purchases of goods which it did not use during 19X 1.

(d) £586 was entered in the 'cash' and 'revenue' accounts for a transaction in error.

The correct data is a credit sale of £865.