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Mathematics, 24.08.2020 03:01 Jackpumpkin

Mr Dominguez spends three weeks training for a marathon. Every day he runs 1/2 mile more than the day before. If the first day he ran 6 miles, how many will he run on the 21st day?

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Mr Dominguez spends three weeks training for a marathon. Every day he runs 1/2 mile more than the da...
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