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:
Answer:
139
Step-by-step explanation:
57+67+45=169÷3=139
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34
Step-by-step explanation:
cause you had to doit the simple math problem
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