Mathematics, 10.12.2021 14:00, Goldenstate32

Diane is participating in a 5-day cross-country biking challenge. She bikes for 47, 46, 61, and 50 miles on the first 4 days. How many miles does she need to bike on the last day so that her average (mean) is 53 miles per day

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Diane is participating in a 5-day cross-country biking challenge. She bikes for 47, 46, 61, and 50 m...