Question 890637
1. number of widgets per month is 64000, 103000, 82000, 93000
number of hours per month is 3000, 4000, 3500, 3750 
number of machines per month = 10, 12, 11, 11
month 1 = 64000 / (10*3000) = 2.133333333
month 2 = 103000 / (12*4000) = 2.145833333
month 3 = 82000 / (11*3500) = 2.12987013
month 4 = 93000 / (11*3750) = 2.254545455
the number of widgets made per machine hour on average over the four months is (2.133333333 + 2.145833333 + 2.12987013 + 2.254545455) / 4 = 2.165895563
2. Navy contractor = 2625 / (15*120) = 1.458333333 widgets per hour
Army contractor = 5000 / (26*120) = 1.602564103 widgets per hour hour
Army contractor has the greater productivity per hour