A & B are partners sharing profits in ratio of 4:3. C joins and the n…

The correct answer is option 3- 1:2.

The old ratio = 4:3 (A & B)
C admits
The new ratio = 7:4:3 (A, B & C)

Sacrifice share = Old share - New share
The sacrifice of A = 4/7 - 7/14
                           = (8-7)/14
                           = 1/14

The sacrifice of B = 3/7 - 4/14
                            = (6-4)/14
                            = 2/14

So, sacrificing ratio is 1/14:  2/14 or 1:2