Mari and Liam can each wash a car and vacuum its interior in 2 hours. Zach needs 3
hours to do...
Mathematics, 24.03.2020 05:38 Calvinailove13
Mari and Liam can each wash a car and vacuum its interior in 2 hours. Zach needs 3
hours to do this same job alone. If Zach, Liam, and Mari work together, how long will it
take them to clean a car?
Answers: 3
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