railway RRB Technician Grade 3 Mock Test 2024 Quantitative Aptitude Ratio and Proportion Simple Ratios

If a ∶ b = 3 ∶ 7, then the ratio of (5 a + 7 b) ∶ (7 a + 5 b) is:

1
3 ∶ 7
2
7 ∶ 11
3
7 ∶ 9
4
8 ∶ 7
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