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Mathematics, 10.02.2021 20:40 rave35
A vendor sells 18 greeting cards in a hour. Some of the cards have photographs on them. Others have illustrations. The cost is 2$ for cards with photos and $3 for cards with illustrations. The total cost of the cards is $44
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A vendor sells 18 greeting cards in a hour. Some of the cards have photographs on them. Others have...
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