A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is : December 30, 2021December 30, 2021 administrator A. 1/4B. 1/10C. 7/15D. 8/15Check AnswerD. 8/15 Share the PostRelated Posts:If A completes a particular work in 8 days and B the…A can do a certain work in the same time in which B…A alone can do a piece of work in 6 days and B alone…A, B and C can do a piece of work in 20, 30 and 60…A can do a piece of work in 4 hours; B and C…In a regular week, there are 5 working days and for…