If (10a3 + 4b3) : (11a3 - 15b3) = 7 : 5, then (3a + 5b) : (9a - 2b) =? – McqOptions

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1.	If (10a3 + 4b3) : (11a3 - 15b3) = 7 : 5, then (3a + 5b) : (9a - 2b) =?
A.	3 : 2
B.	10 : 13
C.	8 : 7
D.	5 : 4
Answer» C. 8 : 7

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