Question

the average marks of 7 students at 39 and the average marks of three of them is 27 the average marks of the four is ​

Answer 1

Answer:

48

Step-by-step explanation:

From Question,

Average marks of 7 students = 39

hence, Sum of marks of 7 students= 7*39=> 273

and given that Average marks of 3 students= 27

hence sum of marks of 3 students = 3*27=> 81

now, Sum of marks of 4 students = 273-81

                                                      = 192

Hence Average marks of 4 students = 192/4

                                                            = 48 ans