MCQ PracticeIf 10 persons can do a job in 20 days, then 20 person with twice the efficiency can do the same job in:Subject: MathematicsTopic: Time And WorkA5 daysB40 daysC10 daysD20 daysCorrect Answer: APractice QuizBack to MCQsRelated MCQsA PC with a 486DX2 processor runs internally at SOMhz. What speed would its exteYou are testing the resistance in Ohms of a fuse on a 2 amp system. If the fuseA keyboard locks up intermittently even when replaced with a new keyboard. What