Mathematics, 08.11.2019 12:31, vanleervanleer

Sixth graders have an average of 60 minutes of homework four days week. seventh graders have 20 minutes more per day than sixth graders.
how many minutes per week of homework does a seventh grader have.

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Sixth graders have an average of 60 minutes of homework four days week. seventh graders have 20 minu...