Mathematics, 21.07.2021 06:00 jellyangie1
Katie, Elizabeth, and Siobhan volunteer at the hospital. In a week, Katie volunteers 3 hours more than Elizabeth does and Siobhan volunteers 1 hour less than Elizabeth. Over 3 weeks, the number of hours Katie volunteers is equal to the sum of Elizabeth’s and Siobhan’s volunteer hours in 3 weeks.
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Katie, Elizabeth, and Siobhan volunteer at the hospital. In a week, Katie volunteers 3 hours more th...
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