Question

46.
The frequency distribution of the marks obtained by 28 students in a test carrying 40 marks
is given below
Marks
0 - 10
10 - 20
20 - 30
30 - 40
Number of
Students
6
y
x
у
6
If the mean of the above data is 20, then
A) x + y = 16 B) x = 8
C) y = 8
D) 3x + 5y = 64
In the following data​

Answer 1

Answer:

y J Cole and I don't know r not going anywhere today is a good day today and tomorrow is