Problema Solution
A Web music store offers two versions of a popular song. The size of the standard version is 2.7 MB. The size of the high quality version is 4.5 MB. Yesterday there were 900 downloads of the song for a total download size of 3564 MB. How many downloads of the high quality version were there?
Answer provided by our tutors
let
s = the number of downloads of the standard version
h = the number of downloads of the high quality version
Yesterday there were 900 downloads of the song
s + h = 900
for a total download size of 3564 MB
2.7*s + 4.5*h = 3564
by solving the system of equations
s + h = 900
2.7*s + 4.5*h = 3564
we find
h = 630 downloads
click here to see the step by step solution of the system of equations
there were 630 downloads of the high quality version.