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algebra

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I'm confused. Can you help?
"The community pool charges $8.00 for adults and $5.00 for children. The total revenue for a
particular cloudy day is $648.00. Determine the number of adults and the number of children who
went to the pool that day if twice as many children paid for admission as adults."

  • algebra -

    if there were a adults, there were 2a children, so

    8*a + 5*2a = 648
    18a = 648
    a = 36

    36 adults and 72 children

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