Jamil can type a 20-page document in 40 minutes, Saheen can type it in 30 minutes, and Johra can type it in 24 minutes. Working together, how much time will it take them to type the same document?
Note
Jamil can type a 20-page document in 40 minutes, Saheen can type it in 30 minutes, and Johra can type it in 24 minutes. Working together, 10 minutes will take them to type the same document.