railway RPF Constable Mock Test Series 2024 Quantitative Aptitude Ratio and Proportion Simple Ratios

यदि a ∶ b = 5 ∶ 1 है, तो 3a + 4b ∶ 3a - 4b का मान क्या है?

1

19 ∶ 11

2

13 ∶ 21

3

14 ∶ 11

4

11 ∶ 12

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