28 March, 20:16
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?
28 March, 21:28
truck t - 30 min,
car c - 20 min
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» 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?