Q1. A B can do a piece of work in 80days B C can do same work in 50days and C A can do same work in 60days Find in how many days they all together can complete that work

Q2. A can do a work in 12 days when he had worked for 3 days B joined him if they complete the work in 3 more days In how many days can B alone finish the work

Q3. 10 horses and 15 cows eat grass of 5 acres in a certain time How many acres will feed 15 horses and 10 cows for the same time supposing a horse eats as much as 2 cows

Q4. A building contractor undertook to finish a certain work in 162 days and employed 150 men After 72 days he found that he had already done 2 3 of the work How many men can be discharged now so that the work finish in time

Q5. 7 men and 5 women can do a work in 6 days Also 6 men and 7 women can do same work in 6 days Find in how many days will 2 men 2 women can finish the work