Mathematics
Mathematics, 20.09.2020 17:01, kayleewoodard

Brian is participating in a 4-day cross-country biking challenge. He biked for 48, 55, and 58 miles on the first three days. How many miles does he need to bike on the last day so that his average (mean) is 54 miles per day?

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Brian is participating in a 4-day cross-country biking challenge. He biked for 48, 55, and 58 miles...

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