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A and B together can do work in 20 days,...

A and B together can do work in 20 days, B and and C and do the same work in 60 days. Who is the most efficient among A,B and C?

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PEARSON IIT JEE FOUNDATION- TIME AND WORK-TEST YOUR CONCEPTS
  1. If x men can do a work in y days, then a man can do the same work in 2...

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  2. A is twice as good workman as B.A takes 6 days the complete a work. In...

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  3. A and B together can do work in 20 days, B and and C and do the same w...

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  4. A and B the completed work and divided the earings in the ratio of 2:3...

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  5. 8 men can knit 8 baskets in 8 days. In how many days cam 3 m en knit 3...

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  6. A man can load one box in 9 minutes. A truck can contain 8 boxes. If 1...

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  7. Pipe A can fill a tank in 40 minutes . Pies B can empty the tank in 30...

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  8. Pipe A can fill a tank in 2 hours at the rate of the 6 litres per minu...

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  9. If A and B cadn do a work in x and y days, respectively, then time ta...

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  10. A can do a task in 18 days. He works for 10 days and leaves. The remai...

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  11. 12 men or 18 woman can do a work in 16 days. In how many days 12 men a...

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  12. A, B and C can do a work in x,3x and 5x days, respectively. They worke...

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  13. A and B can do a work in 20 and 30 days, respectiveyl .They completed ...

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  14. A can point 6 walls in 5 days. B can point 8 walls (of the same area) ...

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  15. The ratio of efficienciess of A, B can C is 2:3:4. Working together, t...

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  16. On working 10 hourse a day, 15 men can complete a piece of work in 20 ...

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  17. A and B can do a work in 20 days, B and C in 40 days and A and C in 3...

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  18. A and B can finish a work together in 12 days, and B and C together in...

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  19. Work done by (x+4) mean in (x+5) days is equal to the work done by (x...

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  20. Pipe A in fill a tank in 15 horurs Pipe A and Pipe B together can fill...

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