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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 p…

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 p…
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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?

asked
User Vojtech Vrbka
by
8.1k points

1 Answer

2 votes

Answer:

25

Explanation:

mean = SUM/#of values

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

solve for x

x=25

answered
User Grissiom
by
8.3k points
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