If a : b = c : d = e : f = 1 : 2, then (3a + 5c + 7e) : (3b + 5d + 7f) is equal to:
If a : b = c : d = e : f = 1 : 2, then (3a + 5c + 7e) : (3b + 5d + 7f) is equal to:
[A]1 : 2
[B]1 : 4
[C]2 : 1
[D]8 : 7
1 : 2
Hence option [A] is the right answer.
