# arithmetic

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If one clerk can process 75 pieces of mail in 2 and 1/2 hours, how long will it take eight clerks to process 1620 pieces of mail if all of them work at this same rate?

• arithmetic -

1 clerk --- 75 pieces --- 2.5 hours
8 clerak --- 600 pieces --- 2.5 hours
8 clerks --- 1620 pieces ----(1620/600)(2.5) or 6.75 hours

• arithmetic -

how did u get 600 pieces?

• arithmetic -

how did u get 1620 pieces?

• arithmetic -

nevermind

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