Five numbers have a mean of 17. When one of them, 25, is removed, what is the mean of the remaining four?
Answer and explanation
Correct answer: B. 15
- Step 1: The sum is 5 x 17 = 85.
- Step 2: Without 25 the sum is 60, and the mean of four numbers is 60 / 4 = 15.
Answer
15.
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