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Mathematics, 03.03.2021 18:40 vlonejd43

There are 3 blue rings, 4 red rings and 8 yellow rings. 4 pairs of shoes cost $80. What is the cost of 7 pairs of shoes ?

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There are 3 blue rings, 4 red rings and 8 yellow rings. 4 pairs of shoes cost $80. What is the cost...
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