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यदि a : b = 2 : 3 तथा b : c = 4 : 5 हो तो (a + b) : (b + c) | Maths Quiz Zone ™

यदि a : b = 2 : 3 तथा b : c = 4 : 5 हो तो (a + b) : (b + c) = ?
Anonymous Quiz
40%
[A] 20 : 27
33%
[B] 27 : 20
20%
[C] 3 : 4
7%
[D] 4 : 3