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A and B can do a piece of work in 12 day...

A and B can do a piece of work in 12 days, B and C in 15 days and C and A in 20 days. In how many days can they do it, all working together?

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10 days
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MAHENDRA-TIME AND WORK -EXERCISES
  1. A and B can do a piece of work in 12 days, B and C in 15 days and C an...

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  2. If man A complete a work in 10 days & man B complete the same work in ...

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  3. A B and C can complete a piece of work in 24, 6 and 12 days respective...

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  4. A man can do a job in 15 days. His father takes 20 days and his son fi...

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  5. A man can do a piece of work in 5 days, but with the help of his son h...

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  6. A can lay railway track between two given stations in 16 days and B ca...

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  7. A takes twice as much time as B and thrice as much time as C finish a ...

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  8. Mohan and Sohan are working on a assignment. Mohan takes 6 hours to ty...

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  9. Two workers A and B are engaged to do a piece of work. A working alone...

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  10. P can complete a work in 12 days working 8 hours a day. Q can complete...

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  11. A and B can do a work in 12 days, B and C in 15 days, C and A in 20 da...

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  12. A and B can do a piece of work in 72 days, B and C can do it in 120 da...

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  13. 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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  14. A can do a piece of work in 4 hours: B and C can do it in 3 hours. A a...

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  15. A can do a certain work in the same time in which B and C together can...

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  16. A Works twice as fast as B. If B can complete a work in 12 days indepe...

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

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  18. A does half as much work as B in three-fourth of the time. If together...

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  19. A can finish a work in 18 days and B can do the same work in 15 days. ...

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  20. Ram and Mohan can complete a work in 15 days and 10 days respectively....

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  21. A can finish a work in 24 days, B in 9 days and C in 12 days. B and C ...

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