Old ratio (Kangli, Mangli and Sanvali) = 4:3:2
New ratio (Mangli and Sanvali) = 5:3
Gaining ratio = New ratio – Old ratio
Mangli’s Gain = 5/8 – 3/9 = 45/72 – 24/72 = 21/72
Sanvali’s Gain = 3/8 – 2/9 = 27/72 – 16/72 = 11/72