The average (arithmetic mean) of three numbers is 50. If two of the numbers have a sum of 85, what is the third number?
A. 75
B. 70
C. 65
D. 55
Answer:C
The average (arithmetic mean) of three numbers is 50. If two of the numbers have a sum of 85, what is the third number?
A. 75 B. 70 C. 65 D. 55
Explanation: C