MCQ PracticeA can do piece of work in 30 days while B can do it in 40 days. In how many days can A and B working together do it ?Subject: MathematicsTopic: Time And WorkA70 daysB120/7 daysC50 daysD45 daysCorrect 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