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A, B and C can complete a piece of work in 4, 20 and 60 days respectively. Working together, they can complete the same work in how many days ?
A, B और C किसी कार्य को क्रमशः 4, 20 और 60 दिनों में पूरा कर सकते हैं | एक साथ कार्य करते हुए वे इस कार्य को कितने दिनों में समाप्त करेंगे ?

A

`5 3/19`

B

`3 1/19`

C

`5 1/19`

D

`3 3/19`

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PINNACLE-WORK AND TIME-EXERCISE
  1. A, B and C can complete a piece of work in 4, 28 and 56 respectively. ...

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  2. A, B and C can complete a piece of work in 5, 20 and 60 days respectiv...

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  3. A, B and C can complete a piece of work in 4, 20 and 60 days respectiv...

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  4. A, B and C can complete a piece of work in 4, 20 and 60 days respectiv...

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  5. A and B can complete a piece of work in 15 days and 10 days respective...

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  6. A and B can complete a piece of work in 15 days and 10 days respective...

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  7. A earns Rs. 640 per day and works for 8 hours. B earns Rs. 360 per day...

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  8. A and B can complete a piece of work in 15 days and 10 days respective...

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  9. A earns Rs. 100 per hour and works for 8 hours per day. B earns Rs. 12...

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  10. A and B can complete a piece of work in 15 days and 20 days respective...

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  11. A, B and C can complete a piece of work in 20, 24 and 36 days respecti...

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  12. If 16 men working 12 hours a day can complete a work in 27 days, then ...

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  13. If 40 men working 12 hours a day can complete a work in 8 days, then h...

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  14. 36 persons working 8 hours a day can do 3 units of work in 12 days. Ho...

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  15. The efficiency of A, B and C are in the ratio 5:6:9 working together, ...

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  16. 16 persons working 6 hours a day can complete a work in 10 days. In ho...

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  17. The efficiencies of A,B and C are in the ratio 5 : 6 : 8, working toge...

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  18. The efficiencies of A,B and C are in the ratio 4 : 5 : 6. Working toge...

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  19. 24 persons working 8 hours a day can complete 2 units of a work in 10 ...

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  20. 18 persons working 8 hours a day can complete 3 units of works in 10 d...

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