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If (10a^3 + 4b^3): (11a^3 - 15b^3=7:5, t...

If `(10a^3 + 4b^3)`: `(11a^3 - 15b^3`=7:5, then (3a + 5b) : (9a - 2b)=?
यदि `(10a^3 + 4b^3)`: `(11a^3 - 15b^3`=7:5 है, तो (3a + 5b) : (9a - 2b)=?

A

`10:13`

B

`5:4`

C

`3:2`

D

`8:7`

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The correct Answer is:
A
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