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QUESTION
Q
The average of fifty numbers is 38. If two numbers namely 45 and 55 are discarded, the average of the remaining numbers...

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

A

39

B

32.5

C

35

D

36

E

37.5

A

39

B

32.5

C

35

D

36

E

37.5

Solution

Average of fifty numbers = 38Sum of fifty numbers = 50 Ã— 38 = 1900Two numbers 45 and 55 are discarded⇒...

Average of fifty numbers = 38Sum of fifty numbers = 50 Ã— 38 = 1900Two numbers 45 and 55 are discarded⇒ Total numbers = 50 âˆ’ 2 = 48Sum of 48 numbers = 1900 − (45 + 55) = 1800⇒ Average of 48 numbers = 1800/48 = 37.5

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