A, B and C started a business. A and B invested in the ratio of 3 ∶ 7 and C invested Rs. 8,000 the same amount as the difference between the investment of A and B. What is the amount invested by B?
1
Rs. 10,000
2
Rs. 6,000
3
Rs. 12,000
4
Rs. 14,000
5
None of these