document.write( "Question 1002002: A Web music store offers two versions of a popular song. The size of the standard version is 2.5 megabytes (MB). The size of the high-quality version is 4.8 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 4991 MB. How many downloads of the standard version were there? \n" ); document.write( "

Algebra.Com's Answer #619023 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+x+\"$ = download size for the standard versions
\n" ); document.write( " $\"+4991+-+x+\"$ = download size for high quality versions
\n" ); document.write( " $\"+4%2A4.8+=+19.2+\"$ = downloads of high quality versions
\n" ); document.write( "-------------------
\n" ); document.write( " $\"+2.5+%2F+19.2+=+x+%2F+%28+4991+-+x+%29+\"$
\n" ); document.write( " $\"+2.5%2A%28+4991+-+x+%29+=+x%2A19.2+\"$
\n" ); document.write( " $\"+12477.5++-+2.5x+=+19.2x+\"$
\n" ); document.write( " $\"+21.7x+=+12477.5+\"$
\n" ); document.write( " $\"+x+=+575+\"$
\n" ); document.write( "there were 575 downloads of the standard version
\n" ); document.write( "-----------------
\n" ); document.write( "check:
\n" ); document.write( " $\"+2.5+%2F+19.2+=+x+%2F+%28+4991+-+x+%29+\"$
\n" ); document.write( " $\"+2.5+%2F+19.2+=+575+%2F+%28+4991+-+575+%29+\"$
\n" ); document.write( " $\"+2.5+%2F+19.2+=+575+%2F+4416+\"$
\n" ); document.write( " $\"+.13021+=+.13021+\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );