2009 · Q9
The arithmetic mean of a set of 10 numbers is 20. If each number is first multiplied by 2 and then increased by 5, then what is the mean of new numbers?
Elementary MathematicsStatistics
- A20
- B25
- C40
- D45
Explanation
Solved; answer D.
The arithmetic mean of a set of 10 numbers is 20. If each number is first multiplied by 2 and then increased by 5, then what is the mean of new numbers?
Explanation
Solved; answer D.