A workshop can manufacture 300 units in 15 days. A second workshop with 80% efficiency is added. Time to produce 300 units now
Correct answer: B. 9
- A. 8.3
- B. 9
- C. 9.5
- D. 10
Explanation
Initially, the first workshop can produce 300 units in 15 days at a rate of 20 units per day. The second workshop, operating at 80% efficiency, contributes an additional 16 units per day (80% of 20 units). Together, both workshops produce 36 units per day (20 + 16). To manufacture 300 units, it now takes 300 / 36 = 8.33 days. Since production must be completed in whole days, it rounds up to 9 days. Option B is correct. Option A underestimates the time, while Options C and D overestimate it by failing to accurately calculate the combined production rates.
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