The mean of 7 numbers is 205. If 12 is added to each number, the new mean is ______.

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KollegeApply · Accepted Answer

The mean of 7 numbers is 205. If 12 is added to each number, the new mean is 217. Explanation: Adding the same constant to every number increases the mean by that constant. So, new mean = 205 + 12 = 217. Check: Original sum = 7 $\times$ 205 = 1435 Add 7 $\times$ 12 = 84 $\Rightarrow$ New sum = 1519 1519 $\div$ 7 = 217

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