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Tasha can do a piece of work in 25 days. Neha is 25% more efficient than Tasha. The number of days taken by neha to do the same piece of work is :
A and B can do a piece of work in 18 days and 12 days respectively. A started the work alone and then after 3 days B joined him till completion of the work. How long did the work last?
When P, Q and R are deployed for a task, P and Q together do 80% of the work and Q and R together do 40 % of the work. Who is most efficient?
A man can do a piece of work in 25 hours. If he works with his son then the same work is finished in 20 hours. If the son works alone he can do the work in
A certain number of persons can complete a work in 45 days. If there were 7 persons more, the work could be finished in 9 days less. How many persons were originally there?
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Feb 6CDS & Defence