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21 July, 03:37

A Web music store offers two versions of a popular song. The size of the standard version is 2.4 megabytes (MB). The size of the high-quality version is 4.2 MB. Yesterday, there were 820 downloads of the song, for a total download size of 2454 MB. How many downloads of the high-quality version were there?

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  1. 21 July, 04:19
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    You can create 2 equations with this problem which are 2.4x+4.2y=2454 and x+y=820. Where x is how many low quality songs you download and y is the amount of high quality songs downloaded.

    I solved this by graphing

    When you graph the interception is (550,270)

    This means 550 low quality songs were downloaded and 270 high quality songs were downloaded
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