MCQ Practice Math 📖 x can do a piece of work in 20 days and Y can do the 1/7th of the same work in 5 days. In how many days together they can co... Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up This question appeared in SBL JBL BKB BDBL Officer Question Bank 2019 Question 35 Nextx can do a piece of work in 20 days and Y can do the 1/7th of the same work in 5 days. In how many days together they can co...