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Question
The average of 50 numbers is 38. If two numbers namely 45 and 55 are discarded, the average of the remaining number is :
36.50
37
37.50
38
40
ANSWER : 3
Descrption
<p>Average for 50 number is 38.</p> <p>The total is = 38×50 = 1900</p> <p>The total of discarded number is = 45 + 55 = 100</p> <p>Hence the total for 48 number is = 1900 - 100 = 1800</p> <p>So, The new average is = 1800÷48 = 37.5</p> <p>ans: 37.5</p>
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