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Question
The average of five numbers is 6.9. If one of the numbers is deleted, the average of the remaining numbers is 4.4. What is the value of the number deleted?
6.8
7.4
12.5
16.9
None of these
ANSWER : 4
Descrption
<p>Let, the sum of first four numbers is x</p> <p>and the deleted number is N</p> <p>According to the question </p> <p>x/4 = 4.4 </p> <p>x = 4.4 ×4 = 17.6 </p> <p>And, (x + N) /5 = 6.9 </p> <p>N = 16.9 </p>
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