The following is the summary of transactions as on 31 December 2009, relating to a special contract completed during the year:

Materials purchased

7,500

Materials issued from stores

2,500

Wages

12,200

Direct expenses

1,470

Work on cost

25% of direct wages

Office on cost

10% of prime cost

Contract price

Rs. 30,000

You are required to prepare a contract account keeping in view that material returned amounted to Rs. 1,200.