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A and B together can do a job in 2 days;...

A and B together can do a job in 2 days; B and C can 2 do it in 4 days; A and C in `\ 2 2/5` days. The number of days required for A to do the job alone is `1` b. `\ 3` c. `6` d. `12`

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RS AGGARWAL-TIME AND WORK-All Questions
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  2. A and B can do a work in 8 days, B and C can do the same work in 12...

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  3. A and B together can do a job in 2 days; B and C can 2 do it in 4 d...

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  4. A and B can do a piece of work in 5 days; B and C can do it in 7 days;...

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  5. A and B can do a piece of work in 12 days, B and C in 8 days and C and...

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  6. Madhu takes twice as much time as Uma to complete a work and Rahul ...

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  7. A takes 5 days more than B to do a certain job and 9 days more than...

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  8. A works twice as fast as B. If B can complete a work in 12 days ind...

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  9. A is twice as good a workman as B. If they work together, they can ...

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  10. David and Michael together can finish a job in 4 days 19 hrs 12 min. I...

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  11. A is thrice as good a workman as B and so takes 60 days less than B fo...

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  12. A and B can do a job together in 7 days. A is 1 3/4 times as efficient...

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  13. Kamal can do a work n 15 days. Bimal is 50% more efficient than Kam...

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  14. A does 20% less work than B. If A can finish a piece of work in 7(1)/(...

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  15. A is 30% more efficient than B. How much time will they, working toget...

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  16. A can do a piece of work in 10 days working 8 hours per day. If B i...

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  17. A does half as much work as B in 3/4th of the time. If together they t...

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  18. A is 50% as efficient as B.C does half of the work done by A and B ...

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  19. Two workers A and B working together completed a job in 5 days. If ...

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  20. A can do a work in 15 days and B in 20 days. If they work on it tog...

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