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Mathematics, 20.09.2020 23:01 marianamartinez6

Diane is participating in a 4-day cross-country biking challenge. She biked for 57, 67, and 45 miles on the first three days. How many miles does she need to bike on the last day so that her average (mean) is 59 miles per day?

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Diane is participating in a 4-day cross-country biking challenge. She biked for 57, 67, and 45 miles...
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