A, B and C started a business with a capital of Rs. 24000, Rs. 18000 and Rs. 12000 respectively and they decided to share their profit according to the ratio of their capital but A is working partner and takes 37 ½ % of the total profit as salary. If C withdraws his capital after 6 months and the total profit after one year is Rs. 32,800 Rs. Then find the share of A.