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Sharma is 20% less efficient than Kelkar. If Kelkar can do a piece of work in 24 days. the number of days required by Sharma to complete the same work alone will be—
  • a)
    20 days
  • b)
    30 days
  • c)
    25 days
  • d)
    35 days
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Sharma is 20% less efficient than Kelkar. If Kelkar can do a piece of ...

  ► ∴ 0.8k = 24 ⇒ k = 30
Thus Sharma requires 30 days, to complete the work, alone.
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Most Upvoted Answer
Sharma is 20% less efficient than Kelkar. If Kelkar can do a piece of ...
If Kelkar can do a piece of work in 24 days, then Sharma, who is 20% less efficient, will take 20% longer to complete the same work.

20% of 24 days is (20/100)*24 = 4.8 days.

Thus, Sharma will take 24 + 4.8 = <24+4.8=28.8>>28.8 days to complete the same work alone. Answer: \boxed{28.8}.
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