Bryan’s volunteer group can clean a typical city park in twelve hours. Sara’s volunteer group can clean the same size park in sixteen hours. How long would it take if the groups worked together? - QAmmunity.org

Bryan’s volunteer group can clean a typical city park in twelve hours. Sara’s volunteer group can clean the same size park in sixteen hours. How long would it take if the groups worked together?

asked Mar 4, 2021 137k views

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