accounts plz help

khishen shet (ca) (277 Points)

13 June 2011  
Mr raja consigned goods costing 2,00,000 to mr rana at 20% profit on invoice price.Mr rana was entitled to 3% ordinary commission plus 10% of the amount which exceede nvoice price less all commission.account saleas revealed that Mr rana sold 3/4th of the goods at 2,25,000. his expenses wee rent 2000 octroi 5000.commission due to rana is
Ans 11667 plz explain