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A alone con finish a piece of work in 12...

A alone con finish a piece of work in 12 days and B alone can do it in 15 days. If both of them work at it together, how much time will they take to finish it ?

A

6 days

B

8 days

C

`6(2)/(3)` days

D

`10(1)/(5)` days

Text Solution

Verified by Experts

The correct Answer is:
C
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ARIHANT SSC-TIME AND WORK-EXERCISE(LEVEL 1)
  1. A alone con finish a piece of work in 12 days and B alone can do it in...

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  2. A can do a piece of work in 10 days, B can do it in 12 days and C can ...

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  3. A can do a piece of work in 5 days, B can do it in 10 days. With the h...

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  4. A can do a piece of work in 8 days, B can do it in 16 days, while C ca...

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  5. A can do a piece of work in 10 days, B can do it in 15 days working to...

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  6. A can do a piece of work in 24 days, while B can do it in 30 days. Wit...

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  7. A can do a piece of work in 10 days. B can do it in 24 days. If C also...

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  8. A can do a piece of work in 14 days while B can do it in 21 days. In h...

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  9. A can do a piece of work in 24 days. If B is 60% more efficient than A...

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  10. A is twice as good a workman as B and together they finish a piece of ...

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  11. A is twice as good a workman as B and together they finish a piece of ...

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  12. A is thrice as good a workman as B and takes 10 days less to do a piec...

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  13. A is twice as good a workman as B and therefore A takes 6 days less th...

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  14. A is thrice efficient as B and C is twice as efficient as B. What is t...

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  15. Ajit is 3 times as efficient as Bablu, then the ratio of number of day...

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  16. X is 4 times more efficient as Y, then the number of days taken by X a...

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  17. If A takes 4//5 days as B takes and working together they require (20)...

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  18. A is thrice as efficient as B. Working together they complete the work...

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  19. A and B can do a piece of work in 8 days, B and C can do the same work...

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  20. 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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