A can do a work in 15 days and B in 20 days. If they work on it together for 4 d May 21, 2022May 21, 2022 by Amish Rai ✪ Choose the correct option.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 :44652448357/158/15 Submit Answer
