If x men can do a piece of work in x days, then the number

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If x men can do a piece of work in x days, then the number of days in which y men can do the same work is

1. xy days
2. y² days
  x
3. x² days
  y
4. x²y days

Correct Option: C

Using Rule 1,
M₁D₁ = M₂D₂
⇒ x . x = y . D₂

⇒ D₂ =	x²	days
	y