Question

the mean of eight number is 42. if one number is 63 then the mean of the remaining numbers is

A. 36
B. 37
C. 38
D. 39​

Answer 1

Answer:

36 .

Step-by-step explanation:

I hope right my answer anyone

Answer 2

The mean of the remaining numbers is 39 if the mean of eight number is 42 and one number is 63

Given:

Mean of eight number is 42

one number is 63

To Find:

Mean of the remaining numbers

Solution:

Mean = (Sum of all the numbers) / (count of Numbers)

Step 1:

Find Sum of all the 8 numbers

42 = Sum of all the 8 numbers / 8

=> Sum of all the 8 numbers = 42 x 8

=> Sum of all the 8 numbers = 336

Step 2:

Subtract 36 from  Sum of all the 8 numbers to find sum of remaining 7 numbers:

Sum of remaining 7 numbers = 336 - 63

Sum of remaining 7 numbers = 273

Step 3:

Divide sum of remaining 7 numbers by 7 to find mean of the remaining numbers

mean of the remaining numbers = 273/7

mean of the remaining numbers = 39

Tthe mean of the remaining numbers is 39

Corect option is D) 39