Quantitative Aptitude Ratio and Proportion Compound Ratios

If (11a³ – 15b³) : (10a³ + 4b³) = 5 : 7, then (9a + 5b) : (5a – 3b) is equal to:

1

10 : 7

2

13 : 5

3

15 : 4

4

14 : 9

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