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Rohit can paint a wall in 40 days, while...

Rohit can paint a wall in 40 days, while Sohan is 25% more efficient than Rohit.
How long would it take Rohit and Sohan together to paint the same wall completely?

A

A)`17(1)/(9)`days

B

B)`17(2)/(9)`days

C

C)`18(1)/(7)`days

D

D)`17(7)/(9)`days

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ADDA247-TIME AND WORK & PIPE AND CISTERN -PRELIMS QUESTIONS (LEVEL - 1)
  1. A can complete 3//5^(th) of the work in 9 days. A and B together do 1/...

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  2. 15 men can complete a work in 8 days while 10 women can complete the s...

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  3. Rohit can paint a wall in 40 days, while Sohan is 25% more efficient t...

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  4. Two pipes P and Q alone can fill a tank in 24 min and 30 min respectiv...

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  5. Efficiency of Anurag is two times more than efficiency of Ayush. Both ...

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  6. The ratio of efficiency of A to that of B is 5:4. A starts the work al...

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  7. A & B can do a piece of work together in 24 days and C's efficiency is...

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  8. A is 25% more efficient than B. B takes 6 days more time to complete t...

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  9. Efficiency of A is 40% more than that of B and ratio of efficiency of ...

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  10. A and B started the work alternatively starting with A. On last day A ...

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  11. Ayush is thrice as good a workman as Anurag and both working together ...

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  12. A can do a piece of work in 48 days and B can do the same work in 64 d...

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  13. Anurag is 40% less efficient than Bholu, who can do the same work in 2...

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  14. Tap A can fill a tank in 24 minutes and tap B can fill the same tank i...

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  15. Sanjeev can prepare some dishes in 4 hours while Nisha can prepare sam...

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  16. X is 40% more efficient than Y and Z takes 33(1)/(3)% less time than X...

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  17. Anurag can make a video in 10 hours whil Karan can make same video in ...

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  18. A cistern has two pipes. One can fill it with water in 15 hours and ot...

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  19. A and B undertake to do a piece of work for Rs.999. A can do it in 10 ...

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  20. A can do a piece of work in 30 days. If A and B together can do (1)/(3...

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