Worker a earns $8.10 per widget produced, produces 10 widgets per day, and works 9 hours per day. worker b earns $8.40 per widget produced, produces 8 widgets per day, and works 7 hours per day. which of these statements is true? a. worker b earns more per day than worker a but less per hour than worker a. b. worker a earns more per day than worker b but less per hour than worker b. c. worker a earns more per day than worker b and more per hour than worker b. d. worker b earns more per day than worker a and more per hour than worker a.