Q.83 : यदि a/b=2/3 तथा b/c =4/5, तो (a +b):(b +c)=?

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Q.83 : यदि a/b=2/3 तथा b/c =4/5, तो (a +b):(b +c)=?
(a) 56:78
(b) 23:34
(c) 20:27
(d) 12:34

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Answer : 20:27

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