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21 February, 06:42

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 4.7 MB.

Yesterday, the high-quality version was downloaded three times as often as the standard version. The total size downloaded for the two versions was 4901 MB.

How many downloads of the standard version were there?

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  1. 21 February, 10:10
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    s = number of standard downloads

    2s = number of high-quality downloads

    2.8s + 4.6 (2s) = 2760

    2.8s + 9.2s = 2760

    12s = 2760

    s = 230

    The standard version was downloaded 230 times and the high-quality version was downloaded 460 times.
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