During the first 3 week of training, a runner runs 20 miles, 22 miles, and 21 miles. How many more miles must she run during the fourth week to have a mean of a least 22 miles per week?

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asked Aug 28, 2021 4.5k views

4 votes

During the first 3 week of training, a runner runs 20 miles, 22 miles, and 21 miles. How many more miles must she run during the fourth week to have a mean of a least 22 miles per week?

Mathematics
college

Vojtech Vrbka asked

by Vojtech Vrbka

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1 Answer

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Answer:

Explanation:

mean = SUM/#of values

(20+22+21+x)/4=22

solve for x

x=25

Grissiom answered Aug 31, 2021

by Grissiom

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