If a : (b+c) = 1 : 3 and c : (a+ b) = 5:7, then b : (a+c) is equal to – McqOptions

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1.	If a : (b+c) = 1 : 3 and c : (a+ b) = 5:7, then b : (a+c) is equal to
A.	1 : 2
B.	2 : 3
C.	1 : 3
D.	2 : 1
Answer» B. 2 : 3

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