railway RRB Technician Grade 3 Mock Test 2024 Quantitative Aptitude Ratio and Proportion Compound Ratios
যদি a ∶ b = 3 ∶ 4, b ∶ c = 2 ∶ 3 এবং c ∶ d = 5 ∶ 6 হয়, তাহলে a ∶ b ∶ c ∶ d হবে:
1
15 ∶ 20 ∶ 35 ∶ 36
2
10 ∶ 20 ∶ 30 ∶ 36
3
15 ∶ 20 ∶ 30 ∶ 36
4
15 ∶ 25 ∶ 30 ∶ 36