An electronics company makes communications devices for military contracts. The company just completed two contracts. The navy contract was for 3,640 devices and took 36 workers two weeks ( 40 hours per week) to complete. The army contract was for 4,820 devices that were produced by 36 workers in three weeks ( 40 hours per week). a. Calculate the productivity for navy and army contracts in units produced per labor hour; Note: Round your answers to 2 decimal places. b. On which contract were the workers more productive? Navy contract Army contract