MCQ PracticeA and B can together do a piece of work in 15 days. B alone can do it in 20 days. In how many days can A alone do it ?Subject: MathematicsTopic: Basic MathsA40 daysB50 daysC60 daysD70 daysCorrect 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