Q160
The average of five numbers is 306.4. The average of the first two numbers is 431 and the average of the last two numbers is 214.5. What is the third number?
A.
52
B.
108
C.
321
D.
Cannot be determined
E.
None of these
AnswerAnswer: Option E
Solution
Answer: Option E
Solution:
Third number = [306.4 × 5 - (431 × 2 + 214.5 × 2)]
= (1532 - 1291)
= 241