The average age of 80 girls is 15 years and the average age of x boys is 20 years. If the
average age of all is 16 years, find the number of boys (x).
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The average age of 80 girls is 15 years and the average age of x boys is 20 years. If the
average age of all is 16 years, find the number of boys (x).
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Step-by-step explanation:
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