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B works four times as much as A. If B ta...

B works four times as much as A. If B takes 15 days less than A to complete this work. In how many days will A and B alone complete this work ?

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The correct Answer is:
`A to 20` days, `B to 5` days
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ADVANCED MATHS BY ABHINAY MATHS ENGLISH-TIME & WORK -QUESTIONS
  1. A is 40 % more efficient than B. If B can complete this work in 24 day...

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

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

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

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

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

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  7. A and B can finish a certain piece of work in 4 days. If A reduces his...

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  8. The ratio of efficiency of A and B is 3 : 5 and that of B and C is 2 :...

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  9. A and B working together can finish certain piece of work in 10 days. ...

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  10. A takes three times as long as (B + C) together to complete a work. B ...

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  11. B takes two times as long as (A + C) together to complete a work. C ta...

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  12. A does half as much work as B in one-sixth of the time.If together the...

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  13. A does half as much work as B in three-fourth of the time. If together...

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  14. A, B and C can do a work in 25, 40 and 60 days respectively. All three...

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  15. A, B and C can do a work in 10, 12 and 15 days respectively. All three...

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  16. A and B can do a work in 20 and 30 days respectively. They start the w...

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  17. (A + B) together can complete a job in 8 days. Both B and C working al...

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  18. A can complete a work in 18 days, B can do the same work in half the t...

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  19. B takes two times time as long as (A + C) together take to complete a ...

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  20. A does (4)/(5) part of the work in 20 days and rest of the work is do...

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