MCQ Practice Math 📖 If the ratio of speed of doing work of the persons is 1 : 3 : 5 , what is the ratio of this taken by these people to do... 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 JBL RBL Officer Question Bank 2019 Question 20 Previous[2-3(2-3)-1]-1 এর মান কত? NextThe average age of the 20 aspirants of a class is 19.2 years. After some time two more aspirants join them and then avera...
