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The mean of five numbers is 30. If one n...

The mean of five numbers is `30`. If one number is excluded, their mean becomes `28`. The excluded number is

A

28

B

30

C

35

D

38

Text Solution

Verified by Experts

Mean of five numbers is 30.
Sum of five numbers `= 30 xx 5 =150`
Let the excluded number be x.
Then, mean of four numbers `=(150-x)/(4) = 28`
`rArr 150-x = 112 rArr x=150-122 = 38`
Hence, (d) is the correct answer.
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