Find Ching and Dew's ticket counts from the graph. Then find how many more Ching needs to reach twice Dew's total.<br><br>
• From the graph, Dew sold 450 tickets. Twice of Dew = 450 &times; 2 = 900<br>
• Ching sold 875 tickets.<br>
• Additional tickets needed = 900 &minus; 875 = 25<br>
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Final Answer: 25