Question: the average ( arithmetic mean ) of 20 , 40 , and 60 is 5 more than the average of 20 , 60 , and what number ?
A) 25
B) 30
C) 35
D) 40
E) 45
Correct answer: A
Grade: 6 | Topic: Statistics and Probability | Difficulty: Easy | Standard: 6.SP.A.3