If 10 persons can clean 10 floors by 10 mops in 10 days, in how many days can 8 persons clean 8 floors by 8 mops?

If 10 persons can clean 10 floors by 10 mops in 10 days, in how many days can 8 persons clean 8 floors by 8 mops?

  • A. 12 ¹/2 days 
  • B. 8 days 
  • C. 10 days 
  • D. 8 ¹/2 days 
 

The correct answer is option C. 10 days. Can you explain this answer in the comments?


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If 10 persons can clean 10 floors by 10 mops in 10 days, in how many days can 8 persons clean 8 floors by 8 mops?




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