SOLUTION: you have 12 mp3 songs on your computer. 1/4 of them don't work. How many mp3's do you have to buy to replace the ones that don't work.

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Question 190342: you have 12 mp3 songs on your computer. 1/4 of them don't work. How many mp3's do you have to buy to replace the ones that don't work.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
To find the ones that don't work, just multiply the fraction that doesn't work by the number total:

%281%2F4%29%2812%29=12%2F4=3


So 3 songs do NOT work. This means that you need to buy 3 songs to replace the ones that do not work.