Answer:
In six hours workers will filled 720 bottles
Explanation:
Data :
 Time = T = 8 hours
 In 8 h fill = 960 bottles 
First we need to how many bottles worker fills in 1 hour 
 So 960/8 = 120 
In 1 hour workers filled 120 bottle 
Now for six hours 
 120 × 6 = 720