Solution
A, B and C shares profits in the ratio of 3 : 2 : 1.
D’s share = 1/8 (D acquired 1/16 from B and C each)
A’s share = 3/6 (retains original share)
B’s new share = 2/6-1/16 = 13/48
C’s new share = 1/6-1/16 = 5/48
New ratio of ABCD = 3/6: 13/48: 5/48: 1/8 or 24: 13: 5: 6