A and B can separately do a piece of work in 6 days and 12 days respectively. How long will they together take to do the work?1). 9 days2). 18 days3). 6 days4). 4 days
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1. 5 men can do a piece of work in 12 days and 10 women can do the same work in 15 days. 5 men and 10 women undertook the same work for Rs. 36,000. They finished the work in 5 days with the help of 15 children. What is the share of 5 children?
2. A can do a piece of work in 10 days, B can do it in 12 days and C can do it in 15 days. In how many days will A, B and C finish it, working all together?
3. Sita can do a piece of work in 6 days and Gita can do the same work in 9 days. Sita and Gita undertook the task to do it for Rs. 3300. With the help of Mina they finished the work in 3 days. How much is Mina’s share?
4. x does $\frac{1}{4}$ of a job in 6 days. y completes rest of the job in 12 days. Then x and y could ccomplete the job together in
5. Grassin a field can completely feed 20 cows or 30 goats for a day. The same field is sufficient to feed 8 cows and 12 goats for
6. A does 80% of a work in 20 days. He then calls in B and they together finish the remaining work in 4 days. How long B alone would take to do the whole work?
7. A certain number of men can do a work in 65 days working 6 hours a day. If the number of men are decreased by one-fourth, then for how many hours per day should they work in order to complete the work
8. Amit and sujit together can complete an assignment of data entry in five days. Sujit?s speed 80% of Amit?s speed and the total key depressions in the assignment are 5,76,000. What is Amit?s speed in key depressions per hour if they work for 8 hours a day ?
9. 16 boys or 24 girls can construct the wall in 6 days. the number of days that 8 boys and 12 girls Will take to construct?
10. Three men, four women and six children can complete a work in seven days. A woman does double the work a man does and a child does half the work a man does. How many women alone can complete this work in 7 days?
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