A alone can complete a job in 50 days. B is 50% more efficient than A. If they work together, how much time will they take?
Answer with explanationAnswer: Option D
Per day, work done by A = 1/50
Per day, work done by B = (150/100) X (1/50) = 3/100
Together, per day, they complete = 1/50 + 3/100 = 5/100 =1/20
Therefore, they take, 20 days to complete the work together.