Question

the mean weight of 5 stusents is 51 and mean weight of 4stusents is 54 then mean weight of 9 students ia​

Answer 1

Step-by-step explanation:

Here,

5 Student ➡ 51

4 students ➡ 54

Then,

Mean weight of 9 students = 51 + 54

= 105 answer

Answer 2

Step-by-step explanation:

mean weight of 5 students = 51

" " " 4 " = 54

" " " 9 " = 51+54=105