PPSC Assistant (BS-16) Labour And Human Resource – 2020, Maths MCQs, PPSC Solved Past Papers MCQsX and Y can do a piece of work in 20 days and 12 days respectively. X started the work alone and then after 4 days Y joined him till the completion of the work. How long did the work last? Posted on April 1, 2021 by Rana TahirA. 6 days B. 10 days C. 15 days D. 20 daysShare this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on LinkedIn (Opens in new window)
