SOLUTION: the mean of 4 number is 25. if each number is decreased by 10 ,what is the mean of the number decreased

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Question 1159123: the mean of 4 number is 25. if each number is decreased by 10 ,what is the mean of the number decreased
Answer by Amily_2190(27) About Me  (Show Source):
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The mean of 4 numbers is 25, so their total must be 100.....4x%2F4=25

Each number is decreased by 10 and there are four numbers, so they decrease by 40 in total.....4%2A10=40

%28100-40%29%2F4=15
The mean of the numbers that were decreased is 15.