If 20 persons can clean 20 floors in 20 days, then in how many days can 16 persons clean 16 floors?

If 20 persons can clean 20 floors in 20 days, then in how many days ca

1.	If 20 persons can clean 20 floors in 20 days, then in how many days can 16 persons clean 16 floors?
A.	25 days
B.	24 days
C.	20 days
D.	16 days
Answer» D. 16 days

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If 20 persons can clean 20 floors in 20 days, then in how many days can 16 persons clean 16 floors?

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