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Mathematics, 09.10.2019 19:00 lilkobe6982

John's sister went shopping with him. she expected to spend $100 on clothes, but spent only $10. john wanted to her calculate the percent error, but he thinks he may have made a mistake. are his calculations below correct? why or why not? ratio = |$100 − $10| $90 = 10 90 ≈ 11%

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