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Task from our school canteen ZŠ Karviná, Majakovského 2219. There are 2 kind s of glasses in our school canteen : 0,2 l for pupils from 6 to 11 years old and 0,4 l for pupils from 12 to 15 years old.
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There are 2 kindsofglasses in ourschoolcanteen: 0,2 l forpupilsfrom 6 to 11 yearsoldand0,4 l forpupilsfrom 12 to 15 yearsold.
Every day our cooks prepare some drink for us:tea, juice, cocoa, mineral water or white coffee. 180 pupils from our school eat in our school canteen and drink some beverage.
How many 0,2 l glasses and how many 0,4 l glasses do we have in our school canteen?Our cooks have to prepare 55,4 l of drink.
(In fact they have to prepare more drink because some of us are very thirsty.)