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Question
The mean of 7 numbers is 205. If 12 is added to each number, the new mean is ______.
Options
193
212
217
227
MCQ
Fill in the Blanks
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Solution
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 × 205 = 1435
Add 7 × 12 = 84
⇒ New sum = 1519
1519 ÷ 7 = 217
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