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. None of these Answer: Option DShow Answer
Solution(By Apex Team)
Third number
= [306.4 × 5 – (431 × 2 + 214.5 × 2)]
= (1532 – 1291)
= 241
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