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A is 30% more efficient than B. How much...

A is 30% more efficient than B. How much time will they, working together, take complete a job which A alone could have done in 23 days?

A

11 days

B

13 days

C

`20 (3)/(17)` days

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
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DISHA PUBLICATION-TIME AND WORK-Practice Exercise (Foundation Level)
  1. A can finish a work in 18 days and B can do the same work in half the ...

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  2. A man is twice as fast as a woman. Together the man and the woman do t...

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

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  4. A contractor undertakes to built a walls in 50 days. He employs 50 peo...

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  5. 12 men complete a work in 18 days. Six days after they had started wor...

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  6. A man, a woman or a boy can do a job in 20 days, 30 days or 60 days re...

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  7. 10 men can complete a piece of work in 15 days and 15 women can comple...

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  8. After working for 8 days, Anil finds that only 1/3 of the work has bee...

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  9. A can knit a pair of socks in 3 days. B can knit the same thing in 6 d...

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  10. A can build up a wall in 8 days while B can break it in 3 days. A has ...

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  11. Sakshi can do a piece of work in 20 days. Tanya is 25% more efficient ...

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  12. Three men, four women and six children can complete a work in seven da...

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  13. Sunil and Pradeep can complete a work in 5 days and 15 days respective...

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  14. Suresh can finish a piece of work by himself in 42 days. Mahesh, who i...

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  15. If 6 BSF or 10 CRPF companies can demolish a terrorist outfit in Kashm...

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  16. 2 men and 3 boys can do a piece of work in 10 days while 3 men and 2 b...

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  17. Three pumps working 8 hours a day can empty a tank in 2 day. How many ...

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  18. If 18 binders bind 900 books in 10 days, how many binders will be requ...

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  19. If 27 men take 15 days to mow 225 hectares of grass, how long will 33 ...

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  20. X and Y can do a piece of work in 72 days. Y and Z can do it in 120 da...

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