Question

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The mean of five numbers is 85. If one number is excluded, then their mean becomes 80. The
excluded number is
(A) 88
(B) 95
(C) 105
(D) 115
OA​

Answer 1

Given,

Mean of 5 numbers = 85

Total = (85*5)

= 425

Mean of 4 numbers = 80

Total = (80*4)

= 320

Value of number excluded = (425-320)

= 105

The Excluded Number is 105 that is Option (C).

I hope this helps.