If A : B = 7:9 and B:C = 3:5, what is A:B:C?

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A : B =7:9 , B:C = 3:5 ആയാൽ A:B:C =?

A7:9:5

B7:9:15

C21:35:45

D7:3:15

Answer:

B. 7:9:15

Read Explanation:

A : B = 7 : 9 = 3(7 : 9) = 21 : 27 B : C = 3 : 5 = 9(3 : 5) = 27 : 45 A : B : C = 21 : 27 : 45 = 7 : 9 : 15

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