MCQ PracticeIf A : B = 7 : 9 and B : C = 3 : 5 then A : B : C is equal to = ?Subject: MathematicsTopic: Ratio And ProportionA7 : 9 : 5B21 : 35 : 45C7 : 9 : 15D7 : 3 : 15Correct Answer: CPractice 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