Mathematics, 19.11.2020 07:30 ashleyvalles16

Mario and Kenneth work in a car wash station. The time that Mario takes in washing a car alone is 20 minutes less than the time that
Kenneth takes in washing the same car. If both of them work together
in washing the car, it will take them 90 minutes. How long will it talo
each of them to wash the car?

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Mario and Kenneth work in a car wash station. The time that Mario takes in washing a car alone is 2...

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