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If the teacher assistant can grade papers in one hour and with the teacher's help they finish in 20 minutes how many minutes would it take the teacher to grade the papers?
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If the teacher assistant can grade papers in one hour and with the teacher's help they finish in 20 minutes how many minutes would it take the teacher to grade the papers?

User FutureCake
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1 Answer

2 votes
it will take the teacher 1 hour
User GPicazo
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