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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)
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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?

User Ciriarte
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5.3k points

1 Answer

3 votes

Answer:

139

Explanation:

57+67+45=169รท3=139

User Ben Barkay
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5.6k points
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