Madhya Pradesh Police Exam Model Paper 2

Tips & Tricks
a ∶ b = 4 ∶ 5 and c ∶ b = 2 ∶ 3
Making the value of b, same in both the ratios:
(a∶ b) × 3 and (b∶ c) × 5
New ratio a: b = 12: 15 and b : c 15: 10
∴ a ∶ b ∶ c = 12 : 15 : 10