Total profit = Rs. 27,000.
Step 1: Salaries taken off the top.
A's salary = 10% of 27,000 = Rs. 2,700
B's salary = 20% of 27,000 = Rs. 5,400
These are paid to A and B first, before the remaining profit is split by capital.
Step 2: Remaining profit.
Remaining = 27,000 - 2,700 - 5,400 = Rs. 18,900
This remaining amount is distributed among A, B and C strictly in proportion to their capital contributions.
Step 3: Capital ratio.
A : B : C = 6,000 : 9,000 : 12,000 = 2 : 3 : 4 (dividing through by 3,000)
Total parts = 2 + 3 + 4 = 9
Step 4: A's share of the remaining profit.
A's share = 18,900 x (2/9) = Rs. 4,200
Step 5: A's total share.
A's total = salary + share of remaining = 2,700 + 4,200 = Rs. 6,900
So A's total share of the profit is Rs. 6,900, which is option (c).