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History, 18.11.2020 19:00 ahhhhhhhh2806

Seventy concert tickets were sold for $550. Each adult ticket costs $9 and each children's ticket costs $5. Find the number of adult tickets (x) and the number of children's tickets (y) sold.

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Seventy concert tickets were sold for $550. Each adult ticket costs $9 and each children's ticket co...
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