A can do piece of work in 30 days while B can do it in 40 days. In how many days can A and B working together do it ? February 25, 2021 / By Preparation Point / Basic Maths Mcqs Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedInA. 70 days B. 120/7 days C. 50 days D. 45 days Share this:TwitterFacebookMoreTelegramWhatsAppLike this:Like Loading... Related Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedIn