(b) Solution in first vessel = 4 : 1 = 5 x 7 Solution in second vessel = 5 : 2 = 7 x 5 Solution in third vessel = 6 : 1 = 7 x 5 Now, ratio in first, second and third vessel are respectively 28 : 7, 25 : 10 and 30 : 5 ∴ Required ratio 28 : 7 25 : 10 30 : 5 = 83 : 22