PPSC Labour Inspector- Labour and Human Resource Department 2020, Maths MCQs, PPSC Solved Past Papers MCQs3x+16=40, what is the root of x? Posted on April 8, 2021 by Rana TahirA. 4 B. 8 C. 12 D. 14Share 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)