The average of 5 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?
[Bank of Maharashtra(PO), 2008]
Explanation
Given,
Total sum of 5 numbers =5×306.4
=1532
Total sum of first two numbers =2×431
=862
Total sum of last two numbers =2×214.5
=429
∴ Third number = 1532-(862+429)
=241
Hence, Option E is correct.
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