Q1. A and B can do a job in 6 and 12 days respectively They began the work together but A leaves after 3 days Then the total number of days needed for the completion of the work is

Q2. Anita Indu and Geeta can do a piece of work in 18 days 27 days and 36 days respectively They start working together After working for 4 days Anita goes away and Indu leaves 7 days before the work is finished Only Geeta remains at work from beginning to end In how many days was the whole work done

Q3. Hari and Vijay can together finish a work in 30 days They worked together for 20 days and then Vijay left After another 20 days hari finished the remaining work In how many days hari alone can finish the work

Q4. A alone can complete a work in 21 days If B is 40 more efficient than A then in how many days A and B together can complete the work

Q5. In a camp there is a food for 400 students for 30 days but after 20 days 200 students left For how many more days the food will last now