MCQ PracticeIn a river, a man takes 3 hours in rowing 3 km upstream or 15 km downstream. What is the speed of the current?Subject: MathematicsTopic: Boats And StreamsA2km/hrB4km/hrC6km/hrD9km/hrCorrect Answer: APractice 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