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QveST [7]
3 years ago
7

A Web music store offers two versions of a popular song. The size of the standard version is 2.9 megabytes (MB). The size of the

high-quality version is 4.7 MB. Yesterday, the high-quality version was downloaded four times as often as the standard version. The total size downloaded for the two versions was 6076 MB. How many downloads of the standard version were there?
Mathematics
1 answer:
Lady bird [3.3K]3 years ago
5 0
Write the equations: 2.9s+4.7h=6076
 \\ h= 4s
Substitute for h: 2.9s+4.7(4s)=6076
Solve for s:2.9s+4.7(4s)=6076 \\ 2.9s+18.8s=6076 \\ 21.7s=6076 \\ s=280
There were 280 downloads of the standard version. There were 1120 downloads of the high-quality version.
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