- A35
- B30
- C32
- D40
Step-by-Step Solution
Total = . First five = 140, last five = 165. The fifth number is counted twice: 140 + 165 − 270 = 35.
Answer: A) 35
Nine numbers average 30. The first five of them average 28 and the last five average 33. What is the fifth number?
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