SOLUTION
Kumar’s share = 3/10acquired by Lakshya and Manoj in 3: 2
Share acquired by Lakshya = 3/10 × 3/5 = 9/50
Share acquired by Manoj = 3/10 × 2/5 = 6/50
Lakshya’s New Share = 2/10+9/50 = 19/50
Manoj’s New Share = 1/10+6/50 = 11/50
Naresh’s share (as retained) = 4/10 or 20/50
New Profit-Sharing Ratio = 19: 11: 20
Gaining Ratio = 3: 2 (as given in the question)