A, B and C started a business with their capitals in the ratio \({{1} \over 3} : {{1} \over 6} : {{3} \over 4}\) . At the end of every quarter, A halves his capital, whereas B doubles his capital, and C leaves his capital unchanged. At the end of a year. A's share in the total profit was ₹2.5 lakhs. What was the difference (in ₹ lakhs) between the shares in the profit of C and B?