Algebra 1

Average attendance at a school's basketball games increased from 1000 to 1500 last year. One student said that represented a 150% increase. Explain the student's error.

Please help!

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  1. (1500 - 1000) / 1000 = ?

    Multiply the decimal answer by 100 to find the percentage.

  2. OK, not enough caffeine.

    kidding . . .

    probably divided the new total by the old total - which is incorrect.

    should be difference divided by old total

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