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If 10 persons can do a job in 20 days, t...

If 10 persons can do a job in 20 days, then 20 person with twice the efficiency can do the same job in :

A

5 days

B

40 days

C

10 days

D

20 days

Text Solution

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The correct Answer is:
A
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ARIHANT SSC-TIME AND WORK-EXERCISE(LEVEL 1)
  1. 24 men can complete a job in 40 days. The number men required to compl...

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  2. 16 men finished one-third work in 6 days. The number of additional men...

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  3. If 10 persons can do a job in 20 days, then 20 person with twice the e...

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  4. A certain job was assigned to a group of men to do in 20 days. But 12 ...

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  5. 30 workers can finish a work in 20 days. After how many days should 9 ...

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  6. 25 men can complete a job in 30 days. After how many days should the s...

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  7. A group of workers can complete a job in 120 days. If there were 4 mor...

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  8. Mr. Modi can copy 40 pages in 10 minutes, Mr Xerox and Mr. Modi both w...

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  9. 20 persons completed (1)/(3)rd of the work in 24 days. How many more p...

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  10. A contractor undertook a work to complete in 60 days. But just after 2...

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  11. 6 men or 10 women can reap a field in 15 days, then the number of days...

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  12. If 2 men or 3 women or 4 boys can do a piece of work in 52 days, then ...

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  13. 2 men or 5 women or 7 boys can finish a work in 469 days. then the num...

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  14. 6 children and 2 men complete a certain piece of work in 6 days. Each ...

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  15. 2 men and 3 women finish 25% of the work in 4 days, while 6 men and 14...

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  16. How long will it take C to finish the work alone?

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  17. The ratio of efficiencies of A,B and C is 6:5:4 and if A, B and C rece...

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  18. 314 weavers weaves 6594 shawls in (1)/(6) hours. What is the number of...

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  19. Three men and two women can do a piece of work in 4 days, while two me...

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  20. 30 girls can finish a work in 40 days. After how many days should 10 g...

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