GMAT Problem Solving
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Source: GWD
Level: 0
Of the 2,500 tons of ore mined daily at a quarry, 0.4 percent results in a certain pure metal. In how many days of mining will the total amount of pure metal produced at the quarry be equal to the daily amount of ore mined?
- A 10
- B 100
- C 250
- D 400
- E 1000