Problema Solution
A Web music store offers two versions of a popular song. The size of the standard version is
2.3
megabytes (MB). The size of the high-quality version is
4.4
MB. Yesterday, the high-quality version was downloaded twice as often as the standard version. The total size downloaded for the two versions was
2886
MB. How many downloads of the standard version were there
Answer provided by our tutors
Let 'x' represent the number of standard version songs, then '2x' represents the number of high-quality version songs:
2.3x+4.4*2x=2886
x=260
260*2=520
So 260 standard versions were downloaded and 520 high-quality versions were downloaded.