Answer:
Workers of army contract were more productive.
Step-by-step explanation:
To determine on which contract the workers were more productive compute the work done per hour by the workers for both contracts.
Number of devices = 2,300
Number of workers = 25
Number of weeks = 2 weeks
Number of hours per week = 40
The number of hours it took 25 workers to produce 2300 devices is =
[tex]=25\times2\times40\\=2000\ hours[/tex]
Then number of devices produced in 1 hour is = [tex]\frac{2300}{2000}= 1.15\ devices\ per\ hour[/tex]
Number of devices = 5,500
Number of workers = 35
Number of weeks = 3 weeks
Number of hours per week = 40
The number of hours it took 35 workers to produce 5500 devices is =[tex]=35\times3\times40\\=4200\ hours[/tex]
Then number of devices produced in 1 hour is = [tex]\frac{5500}{4200}= 1.31\ devices\ per\ hour[/tex]
The workers for the army contract are more productive since they produce 1.31 devices per hour whereas the workers for navy contract produces 1.15 devices per hour.