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If the mean of 10 numbers is 96 and one of the numbers is 150, then what is the mean of the remaining nine numbers ?
Question

If the mean of 10 numbers is 96 and one of the numbers is 150, then what is the mean of the remaining nine numbers ?

A.

60

B.

75

C.

81

D.

90

Correct option is D

Let x be the mean of the remaining nine numbers.
The sum of all 10 numbers is 10 x 96 = 960.
The sum of the remaining nine numbers is 9x.
Since one of the numbers is 150, we have:
9x + 150 = 960
9x = 810
x = 90
Therefore, the mean of the remaining nine numbers is 90.

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