A toy factory makes 200 toys a day with 10 workers. If 2 workers are transferred, and production must stay same, how much longer must they work per day?
Correct answer: B. 1.5 hr
- A. 1 hr
- B. 1.5 hr
- C. 2 hr
- D. 2.5 hrs
Explanation
Initially, 10 workers produce 200 toys in a day. Each worker contributes equally, meaning each worker is responsible for 20 toys. When 2 workers are transferred, only 8 workers remain. To produce the same 200 toys with 8 workers, each must increase their productivity. Mathematically, the remaining workers need to work 1.5 times longer to achieve the same output, calculated as (10 workers / 8 workers) = 1.25 times the original work time, which is approximately 1.5 extra hours. Thus, the correct answer is 1.5 hrs. Other options either underestimate or overestimate this required additional work time.
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