Posted by SAPPHIRE on Wednesday, May 5, 2010 at 9:57am.
IF ONE CLERK CAN PROCESS 75 PIECES OF MAIL IN 2 AND A HALF HOURS, HOW LONG WILL ITTAKE EIGHT CLERKS TO PROCESS 1620 PIECESOF MAIL IF ALL OF THEM WORK AT THIS SAME RATE?

General Math  MathMate, Wednesday, May 5, 2010 at 10:21am
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If one clerk can process 75 pieces of mail in 2.5 hours, he/she can process 75/2.5=30 pieces of mail every hour.
With 1620 pieces of mail, and 8 clerks, it will take 1620/(8*30)=6.75 hours.
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