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# Of the 2,500 tons of ore mined daily at a quarry, 0.4 percent results

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Re: Of the 2,500 tons of ore mined daily at a quarry, 0.4 percent results [#permalink]
michaelkalend
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 1,000

Dear Moderator,
Found this PS question, while going through the DS section of Arithmetic , hope we can move it to the proper place, Thank you.
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Re: Of the 2,500 tons of ore mined daily at a quarry, 0.4 percent results [#permalink]
stne
michaelkalend
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 1,000

Dear Moderator,
Found this PS question, while going through the DS section of Arithmetic , hope we can move it to the proper place, Thank you.
___________________
Moved to PS. Thank you.
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Q51  V47
Re: Of the 2,500 tons of ore mined daily at a quarry, 0.4 percent results [#permalink]
0.4% = 4/1000 = 1/250, and if we're getting 1/250th of what we want each day, it will take 250 days.

The "2500 tons" in the question is irrelevant and there's no need to use it here.
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Re: Of the 2,500 tons of ore mined daily at a quarry, 0.4 percent results [#permalink]