
Anthony B. answered 11/09/15
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1. we need to find the rate at which one worker produces a certain amount of units per hour.
2. use the displacement formula, d = rt
3. 100 = r*4
4. 100/4 = r
5. 25 units/hr = r
6. therefore, one worker produces 1 unit/hr
7. Given this, 40 workers will produce 40 units/hr
8. 40 units/hr * 3 hrs = 120 units