Mathematics, 01.09.2019 21:00 ajatez8813
At the start of the week a bookshop had science and art books in the ratio 2: 5. by the end of the week, 20% of each type of books were sold and 2240 books of both types were unsold. how many books of each type were there at the start of the week?
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At the start of the week a bookshop had science and art books in the ratio 2: 5. by the end of the w...
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