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Spotty editing (Posted on 2006-02-14) Difficulty: 3 of 5
Anne, Edward, and Isaac are the three editors of the Perplexus Weekly newspaper. This week, Anne spotted 300 errors, Edward spotted 100 errors, and Isaac spotted 200 errors. Altogether, they spotted 404 errors. Assuming that each error is equally easy to spot, about how many errors did they miss?

See The Solution Submitted by Tristan    
Rating: 4.3333 (3 votes)

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re(2): Assuming that ... | Comment 9 of 13 |
(In reply to re: Assuming that ... by Gamer)

Or we might see that it reduces to

0=49x² - 27500x + 1500000

Which can be factored into:

0 = (49x-3000)(x-500)

 

I found this approach was warranted from knowing that there were an integral number of errors.


  Posted by Eric on 2006-02-15 01:21:58
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