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Ian and nadya can each wash a car and clean its interior in about 2 hours but chris needs 3 hours to do the work If the three work together how long will it take them to clean seven cars?
Wiki User
∙ 16y ago
7 hours, because if you keep adding one person its about one hour less then you just times that by the number of cars (which is seven)
Wiki User
∙ 16y ago
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