यदि a/b=2/3 तथा b/c =4/5, तो (a +b):(b +c)=? – McqOptions

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1.	यदि a/b=2/3 तथा b/c =4/5, तो (a +b):(b +c)=?
A.	20:27
B.	56:78
C.	12:34
D.	23:34
Answer» B. 56:78

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