From the following particulars, prepare a cost statement:

Stock (1 January 2009)

Raw materials

91,500

Finished goods

61,200

Stock (31 December 2009)

Raw materials

1,45,500

Finished goods

30,000

Purchase of raw materials

75,000

Work-in-progress

On 1 January 2009

24,000

On 31 December 2009

27,000

Sales

2,85,000

Direct wages

61,200

Factory expenses

31,500

Office expenses

16,200

Selling expenses

11,400

Distribution expenses

7,500

Also calculate the percentage of works expenses to direct wages and the percentage of office expenses to works cost.