Answer : Option C

Explanation :

The initial ratio of A and B is 3: 2

Increased salary of A is 2: 3 that means if it was 2 then it becomes 3.
i.e., if it was 2, it becomes 3
Or, 1 becomes 3/2
But the A's ratio was 3, so we have to calculate for 3
3 becomes (3/2) * 3 = 9/2 = 4.5
Similarly, B?s increase is 3: 4
3 becomes 4
Or, 1 becomes 4/3
But the B's ratio was 2, so we have to calculate for 2
i.e., 2 become (4/3)* 2 = 8/3

That means if the old ratio of A: B = 3: 2
Then the new ratio of A: B = 4.5: 8/3
So, the new ratio of A: B = 13.5: 8
Now, the salary of B = (B's share/ Sum of ratios)* total salary
Hence, the salary of B = (8/21.5) * 21500 = 8000