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Please help answer this

Please help answer this-example-1

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Explanation:

Girls - 2 over 5 times 250 over 1 = 100

Boys - 3 over 10 times 250 over 1 = 75

Total number of people - Girls + Boys

250 - 100 + 75

250 - 175 = 75

Therefore,

Adult = 75

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