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A and B together can complete a work in ...

A and B together can complete a work in 12 days. A alone can complete it in 20 days. If B does the work only for half a day daily, then in how many days A and B together will complete the work? `110\ d a y s` b. `11\ d a y s` c. `15\ d a y s` d. `20\ d a y s`

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RS AGGARWAL-TIME AND WORK-All Questions
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  2. The daily wages of a worker are Rs. 100. Five workers can do a work...

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  3. A and B together can complete a work in 12 days. A alone can comple...

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  7. A, B and C can do a piece of work in 20, 30 and 60 days respectively. ...

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  8. A can do a piece of work in 90 days, B in 40 days and C in 12 days. Th...

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  9. A and B can finish a work, working on alternate days, in 19 days, when...

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

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  11. A, B and C can do a piece of work in 36, 54 and 72 days respectively. ...

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  12. Twenty women can do a work in sixteen days. Sixteen men can complete t...

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  13. 10 men can complete a piece of work in 15 days and 15 women can comple...

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  14. A job can be done by 3 skilled worksmen in 20 days or by 5 boys in 3...

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  15. Five men are working to complete a work in 15 days. After five days ...

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  16. A contractor undertakes to do a piece of work in 40 days. He engages...

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  17. 16 men can finish a piece of work in 49 days. 14 men started workin...

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  18. 7 men can complete a work in 12 day. They started the work and after...

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  19. 12 men complete a work in 9 days. After they have worked for 6 days...

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

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