There are 3 numbers A, B and C. If A:B = 3/4, B:C = 4/5, C:D = 5/6, then A:D will be?  Choose the correct choice from the following options:
A) 1 : 2
B) 2 : 3
C) 3 : 5
D) 3 : 7
E) 3 : 8
Sol. A : B = 3 : 4, B : C = 4 : 5, C : D = 5 : 6   ∴A∶B∶C∶D= 3 : 4 : 5 : 6.   Thus, 1 : 2 : D = 3 : 6 or, 1 : 2   1 : 2
<result>A</result>
There are 3 numbers A, B and C. If A:B = 3/4, B:C = 4/5, C:D = 5/6, then A:D will be?