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Mathematics, 08.07.2019 03:30 jdkrisdaimcc11

New hospital employs 200 people on the nursing staff. sixty are nurse’s aides, seventy are practical nurses and seventy are registered nurses. nurse’s aides receive $ 15 an hour, practical nurses $ 25 an hour and registered nurses $ 30 an hour. what is the (weighted mean) hourly average wage of the nursing staff?

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