Question

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-qua ty version is 4.1 MB.

Answer 1

Explanation:

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Answer 2

880 high-quality version

Explanation:

I think the below is your full question:

A Web music store offers two versions of a popular song. The size of the standard version is 2.1megabytes (MB). The size of the high-quality version is 4.5 MB. Yesterday, there were 1290 downloads of the song, for a total download size of 4821 MB. How many downloads of the high-quality version were there?

Here is my answer:

Let x is the number of high-quality version

So the number of standard version= 1290 - x

We also know: total download size of 4821 MB. which means:

4.5x + 2.1(1290-x) = 4821

<=> 4.5x+2709-2.1x=4821

<=> 2.4x=2112

<=> x=880

So there were 880 high-quality version