12 men can do a piece of work in 15 days and 20 women can do the same work in 12 days. In how many days can 5 men and 5 women complete the same work ?
\({ \text{20}}\frac{4}{7}{ \text{ days}}\)
\({ \text{2}}\frac{4}{7}{ \text{ days}}\)
\({ \text{20}}\frac{3}{7}{ \text{ days}}\)
18 days
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1
Discuss

A can do a piece of work in 12 days and B in 20 days. If they together work on it for 5 days, and remaining work is completed by C in 3 days, then in how many days can C do the same work alone ?
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2
Discuss

Kamal can do a work in 15 days. Bimal is 50% more efficient then Kamal. The number of days, Bimal will take to do the same piece of work, is = ?
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3
Discuss

A group of workers was put on a job. From second day onwards, one worker was withdrawn each day. The job was finished when the last worker was withdrawn. Had no worker been withdrawn at any stage, the group would have finished the job in 55% of the time. How many workers were there in the group?
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4
Discuss

A contractor undertook to do a certain piece of work in 9 days. He employed certain number of men, but 6 of them being absent from the very first day, the rest could finish the work in 15 days. The number of men originally employed were
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5
Discuss

A particular job can be completed by a team of 10 men in 12 days. The same job can be completed by a team of 10 women in 6 days. How many days are needed to complete the job if the two teams work together ?
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6
Discuss

18 men can complete a piece of work in 63 days. 9 women take 189 days to complete the same piece of work. How many days will 4 men, 9 women and 12 children together take to complete the piece of work if 7 children alone can complete the piece of work in 486 days ?
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7
Discuss

A works twice as fast as B. If B can complete a work in 12 days independently, the number of days in which A and B can together finish the work in :
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8
Discuss

To complete a piece of work A and B take 8 days, B and C 12 days. A, B and C take 6 days. A and C will take :
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9
Discuss

A can do a work in 10 days. The efficiency of A is 20% less than B. How many days B need to finish the same work?
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10
Discuss

A man can do a piece of work in 30 hours. If he works with his son then the same piece of work is finished in 20 hours. If the son works alone then he do the work in ?
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