Panu, Jiban, and Jalil can complete a certain task individually in 30, 20 and 60 days, respectively. Jiban started work on the task and Panu and Jalil agreed to help Jiban every third day. How many days will it take to complete the task?
If 3 is added to both the numerator and the denominator, the fraction becomes 10/11. When 4 is subtracted from both the numerator and the denominator of the same fraction. it becomes 3/4. What is the value of the fraction?