If a: b = 3:4, b:c = 7:9, c:d = 5:7, find a:d? – McqOptions

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1.	If a: b = 3:4, b:c = 7:9, c:d = 5:7, find a:d?
A.	5:12
B.	7:12
C.	3:11
D.	5:11
Answer» B. 7:12

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