What is the average working hours of an employee in a factory based on the following working hours distribution ?No of working hoursNo. of Employees3 - 5 hours25 - 7 hours47 - 9 hours89 - 11 hours6

What is the average working hours of an employee in a factory based on

1.	What is the average working hours of an employee in a factory based on the following working hours distribution ?No of working hoursNo. of Employees3 - 5 hours25 - 7 hours47 - 9 hours89 - 11 hours6
A.	5
B.	7.8
C.	8
D.	8.6
Answer» B. 7.8