D Clark's manufactures are sold in boxes which are returnable. They are charged out to customers at \(£ 8\) each and credit of \(£ 6\) is given for each box returned within two months. For the purpose of the annual accounts, the value of boxes in the factory and those in customers' hands, which had been invoiced within two months, was taken as being \(£1.50

\) each. The quantities of these on 31 January \(19 \mathrm{X} 3\) were 600 and 4,000 respectively.

The following were the transactions as regards boxes during the year ended 31 January 19X4

- Purchases \(-5,000\) at \(£ 2\) each

- Invoiced to customers \(-17,000\)

- Returned by customers - 14,000

- 450 could no longer be used and were sold, realising \(£ 100\).

The number of boxes invoiced after 30 November \(19 \mathrm{X} 3\) and still in customers' hands on 31 January \(19 \mathrm{X} 4\) was 6,200 .

Required Write up the accounts in the books of D Clark to record these transactions and to show the profit on boxes and the quantities involved.