A man can do a piece of work in 5 days, but with the help of his son, he can do the same work in 3 days. At what time the son can do the work alone? January 30, 2021 / By Preparation Point / Mathematics Mcqs Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedInA) 7.5 B) 8.5 C) 10 D) 11 Share this:TwitterFacebookMoreTelegramWhatsAppLike this:Like Loading... Related Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedIn