Question

The average of 50 numbers is 38. If two numbers 45 and 55 are discarded, the average of the remaining set of numbers is:

• A. 38.5
• B. 37.5
• C. 37
• D. 36.5
• E. None of these

Answer 1

The correct option is B 37.5

Average of the remaining set of numbers
$=\frac{50\times 38-(45+55)}{50-2}=\frac{1900-100}{48}=37.5$