railway RRB Technician Grade 3 Mock Test 2024 Quantitative Aptitude Ratio and Proportion Compound Ratios
যদি a ∶ b ∶ c = 2 ∶ 5 ∶ 3 এবং c ∶ d = 5 ∶ 2 হয়, তাহলে a ∶ b ∶ c ∶ d এর মান কত?
1
9 ∶ 25 ∶ 15 ∶ 4
2
10 ∶ 25 ∶ 15 ∶ 6
3
10 ∶ 25 ∶ 5 ∶ 2
4
10 ∶ 25 ∶ 5 ∶ 3