MCQ PracticeIf a: b = 3: 4, b: c = 4: 7, then fraca + b + cc is equal to -Subject: MathematicsTopic: Ratio And ProportionA1B2C3D7Correct Answer: BPractice QuizBack to MCQsRelated MCQsCurrent flows in a circuit whenEighttenths coulomb passes a point in 4 s. The current in amperes isThe unit of electrical charge is the