If A:b=2:3;b:c=4:5 and c:d=6:7, then a:d=? – McqOptions

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1.	If A:b=2:3;b:c=4:5 and c:d=6:7, then a:d=?
A.	12:35
B.	24:35
C.	16:35
D.	24
Answer» D. 24

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