Comprehension Passage
The following table gives the marks obtained by students in the given class intervals. Read the table and answer the questions.
|
Class Interval |
0-10 |
10-20 |
20-30 |
30-40 |
40-50 |
50-60 |
60-70 |
70-80 |
|
No. of student |
24 |
28 |
36 |
44 |
46 |
X |
20 |
10 |
If mean marks of the students is 37.64, what is the value of x ?
1
42
2
44
3
45
4
40