If A : B = 3 : 4 and B : C = 8 : 9 then find the value of

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If A : B = 3 : 4 and B : C = 8 : 9 then find the value of A : B : C ?

1. 3 : 4 : 5
2. 1 : 2 : 3
3. 7 : 12 : 17
4. 6 : 8 : 9

Correct Option: D

Given that
A : B = 3 : 4 = ( 3 x 2 ) : (4 x 2 ) = 6 : 8
B : C = 8 : 9
∴ A : B : C = 6 : 8 : 9
As consequent of the first ratio is equal to the antecedent of second ratio.