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A and B can do a work in 20 days and 30 ...

A and B can do a work in 20 days and 30 days respectively. A and B work on alternate days. Find the number of days to complete the work

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The correct Answer is:
115 days
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ADVANCED MATHS BY ABHINAY MATHS ENGLISH-TIME & WORK -QUESTIONS
  1. A, B and C can do a piece of work in 12, 15 and 20 days. How much mini...

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  2. A, B and C can do a piece of work in 10, 20 and 25 days. How much mini...

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  3. A and B can do a work in 20 days and 30 days respectively. A and B wor...

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  4. (A + B) can do a work in 6 days. (A + B + C) can do the same work in 5...

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  5. A takes 27 days more than (A + B) together to complete a work. B takes...

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  6. A takes 4(1)/(2) days more than (A + B) together to complete a work. B...

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  7. A takes 5(1)/(3) days more than (A + B) together to complete a work. ...

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  8. A takes 7 days more than B and 16 days more than C to complete a work....

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  9. A takes 24 days more than B and 32 days more than C to complete a work...

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  10. A takes 5 days more than B and 9 days more than C to complete a work. ...

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  11. A takes 6 hours more than (A + B + C) together to complete a work. B t...

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  12. A and B together can do a piece of work in 12 days. While B and C toge...

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  13. (A + B) together can do a piece of work in 12 days. While (B + C) toge...

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  14. A takes as much time as B and C together to complete a work. While A a...

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  15. A is 40 % more efficient than B. If B can complete this work in 24 day...

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  16. A works thrice as much as B. If A can complete this work in 12 days, t...

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  17. B works four times as much as A. If B takes 15 days less than A to com...

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  18. A is 40 % more efficient than B and B is 20 % less efficient than C. I...

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  19. Ratio of efficiency of P and Q is 3 : 4. Find the ratio of number of d...

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  20. Efficiency of A is (3)/(4) of B's efficiency and B's efficiency is 80...

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