SOLUTION: A Web music store offers two versions of a popular song. The size of the standard version is 2.8 megabytes (MB). The size of the high-quality version is 4.4 MB. Yesterday,

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Question 1162950: A Web music store offers two versions of a popular song. The size of the standard version is
2.8
megabytes (MB). The size of the high-quality version is
4.4
MB. Yesterday, there were
1120
downloads of the song, for a total download size of
4368
MB. How many downloads of the high-quality version were there?
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.

Let x be the value under the question.


Then from the condition you have this equation


    4.4x + 2.8*(1120-x) = 4368    megabytes.


From the equation


    x = %284368-2.8%2A1120%29%2F%284.4+-+2.8%29 = 770.


ANSWER.  770 downloads of the high-quality version.