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A and B can do a piece of work in 72 day...

A and B can do a piece of work in 72 days, B and C can do it in 120 days, and A and C can do it in 90 days. When A, B and C work together, how much work is finished by them in 3 days.

A

80 days

B

100 days

C

120 days

D

150 days

Text Solution

Verified by Experts

The correct Answer is:
C
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ARIHANT SSC-WORK AND TIME -EXERCISE BASE LEVEL QUESTION
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  2. A and B can do a piece of work in 18 days. B and C in 24 days, C and A...

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  3. 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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  4. A and B can do piece of work in 10h. B and C can do it in 15h , while ...

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  5. A can do a piece of work in 10 days and B in 20 days. They begin toget...

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  6. A and B together can complete a work in 3 days. They started together ...

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  7. A can do a piece of work in 10 days, while B can do it in 6 days.B wor...

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  8. A and B can complete a job in 24 days working together. A alone can co...

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  9. A contractor undertook to do a certain piece of work in 18 days. He em...

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  10. P and Q can finish a work in 30 days. They worked at it for 10 days an...

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  11. A and B can do a piece of work in 60 days and 75 days, respectively. B...

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  12. A can do a piece of work in 25 days and B can finish it in 20 days. Th...

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  13. A and B can complete a work in 8 days , working together , B alone can...

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  14. 10 men can make a wall in 8 days. How many men required to complete th...

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  15. 6 boys can complete a piece of work in 16 h . In how many will 8 boys ...

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  16. In a hostel, there are 120 students and food stock is for 45 days. If ...

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  17. If 5 boys take 7 h to pack 35 toys, how many boys can pack 65 toys in ...

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  18. 20 women can complete a piece of work in 7 days. If 8 more women are p...

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  19. 12 men can do a piece of work in 24 days. How many days are needed ...

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  20. 20 men can cut 30 trees in 4 h. If 4 men leave the job, how many trees...

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