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1. A box contains 200 pens of which 25% are red and the rest are black. You sold a certain number of pens, of which 60% were black. You found that among the remaining pens, only 20% are red. How many pens did you sell?
- A. 50
- B. 50
- C. 50
- D. 50
Answer: Option A
Explanation:
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