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18 March, 00:25

Jenny wash dishes four times as many times as her brother last month. Her brother wash dishes eight times. Jenny said she could multiply 3*8 to find how many more times she washed dishes then her brother. Is Jenny correct? Explain.

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  1. 18 March, 00:31
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    Answer: yes, Jenny is correct.

    Explanation.

    Analysis step by step.

    1) Jenny's brother washed dishes 8 times.

    2) Jenny washed dishes 4 * 8 = 32

    3) The difference is 4 * 8 - 8 = (4 - 1) * 8 = 3*8 = 24.

    4) Jeeny washed dishes 32 times, while her brother washed dishes 8 times, so, indeed, she washed 3 * 8 more dishes than her broter and she is correct.

    You must realize that although she washed 4 times the number of dishes that her brother did, the difference is just 3 times: 32 - 8 = 24 = 3 * 8
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