The mean of 8 numbers is 35 If a number is excluded then the mean is reduced by 3 Find the excluded ...

Question

The mean of 8 numbers is 35 If a number is excluded then the mean is reduced by 3 Find the excluded number

Accepted Answer

It is given that Mean of 8 numbers 35 So the total sum 35 8 280 It is given that if a number is excluded then the mean is reduced by 3 So the new mean 35 3 32 We know that total sum of 7 numbers 32 7 224 So we get Excluded number sum of 8 numbers sum of 7 numbers By substituting the values Excluded number 280 224 56 Therefore the excluded number is 56

RS Aggarwal Solutions Class 9 Mathematics Solutions for Mean Median And Mode Of Ungrouped Data Exercise 18A in Chapter 18 - Mean Median And Mode Of Ungrouped Data