IBPS RRB Office Assistant Model Paper 9

A and B are two partners and they have invested Rs. 54,000 and Rs. 90,000 in a business. After one year A received Rs. 1800 as hisshare of profit out of total profit of Rs. 3600 including his certain commission on total profit since he is a working partner and rest isreceived by B. What is the commission of A as a percentage of the total profit?