Question
The following table shows the number of working hours and the number of employees employed in a small scale industry
No. of working hours
No. of employees
3 - 5
7
5 - 7
10
7 - 9
18
9 - 11
57
11 - 13
14
13 - 15
8
The average number of working hours of an employee is
No. of working hours
No. of employees
3 - 5
7
5 - 7
10
7 - 9
18
9 - 11
57
11 - 13
14
13 - 15
8
The average number of working hours of an employee is
Answer: Option B
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