The mean weight of 6 boys in a group is 48kg. The individual weights of five of them are 51kg, 45kg,

49kg, 46kg and 44kg. Find the weight of the sixth boy.

Question

The mean weight of 6 boys in a group is 48kg The individual weights of five of them are 51kg 45kg 49kg 46kg and 44kg Find the weight of the sixth boy

Accepted Answer

It is given that Mean weight of 6 boys 48kg So we get Mean weight sum of the weight of 6 boys6 48 We know that Sum of weight of six boys 48 6 288kg So the sum of weight of 5 boys 51 45 49 46 44 235kg We get Weight of sixth boy sum of weight of six boys sum of weight of 5 boys By substituting the values Weight of sixth boy 288 235 By subtraction Weight of sixth boy 53kg Therefore the weight of sixth boy is 53 kg

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