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Mathematics, 28.07.2019 00:30 fake7667

Washing 2 cars and 3 trucks takes 130 minutes. washing 2 cars and 5 trucks takes 190 minutes. how long does it take to watch each type of vehicle?

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Washing 2 cars and 3 trucks takes 130 minutes. washing 2 cars and 5 trucks takes 190 minutes. how lo...
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