Task: Question Answering
Input (English): Problem: working together at their respective constant rates, machine a and machine b can produce 1600 units in 8 hours. working alone, machine b would complete that same output in 50 % more time. if machine a were to work on its own for an 8 - hour shift, what percent of the 1600 unit total would it produce ?
Options: a. 25, b. 33, c. 50, d. 67, e. 75
Output (English): b