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28 June, 22:36

Christine is participating in a 4-day cross-country biking challenge. She biked for 66,62,47 and miles on the first three days. How many miles does she need to bike on the last day so that her average (mean) is 60 miles per day

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  1. 28 June, 22:42
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    65 miles

    Step-by-step explanation:

    the average is found by adding all the variables then dividing by the amount of variables so

    66 + 62 + 47 + x divided by 4 = 60

    x = 65
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