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3 years ago

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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. Ho

w many miles does she need to bike on the last day so that her average (mean) is 59 miles per day?

1 answer:

ella [17]3 years ago

6 0

Answer:

139

Step-by-step explanation:

57+67+45=169÷3=139

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