The average of 5 numbers is 306.4. The average of the first two numbers is 431 and the average if the last two numbers is 214.5. What is the third number?

(a)52 (b) 108 (c) 321 (d) None of these

The average of 5 numbers is 306.4. The average of the first two numbers is 431 and the average if the last two numbers is 214.5. What is the third number?

(a)52 (b) 108 (c) 321 (d) None of these

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