a and b can complete a task in 30 days when working together after a and b have been working together for 11 days , b is called away and a , all by himself completes the task in the next 28 days . Had a been working alone , the number of days taken by him to complete the task would have been ?? Options a)33 3/19 b) 19 6/25 c) 44 4/19 d) none of these

• A+B= 1/30
  (A+B) 11 days = 11/30
  Rem = 19/30
  28*30/19 =A =840/19 =44 (4/19)
  
• 9 years agoHelpfull: Yes(1) No(0)