Will give medal
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
4.3
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
5684
MB. How many downloads of the standard version were there?

Question

Will give medal
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 
4.3
 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 
5684
 MB. How many downloads of the standard version were there?

matlee · Answer

8294

xapproachesinfinity · Answer

let x be the number of download for standard version
and y be the number of .............. for high quality version
the y=4x
2.4x+4.3y=5684

xapproachesinfinity · Answer

solve for x to find how many downloads for standard

xapproachesinfinity · Answer

you just substitute y with 4x in the second and you have and easy equation