Question

Please and thank you :( (I have a deadline today in 3 hours) 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 4.7 MB. Yesterday, there were 1120 downloads of the song, for a total download size of 3128 MB. How many downloads of the standard version were there?

Answer 1

?

Answer 2

?? ...

Answer 3

@jigglypuff314

Answer 4

The total number of standard versions plus high quality versions is 1120 downloads right? :)

do you think you can make that into an equation?

Answer 5

I put 2.3+(1120)-2.3x+4.7x=3128 I took a problem i tried to do before as an example.

Answer 6

but i dont know

Answer 7

hmm
you should try the system of equations

s + h = 1120
2.3s + 4.7h = 3128

Answer 8

Oh, they didnt explain it to us that way~! ._.

Answer 9

do you know how to do that kind of system of equations? :)

Answer 10

yeah (:

Answer 11

I got 890 and it was correct. Ill do the rest of them by myself. Can i tag you in another question after? or do you have class

Answer 12

aye I have a major project due in 8 hours
... that Is didn't start

Answer 13

lol oh :c and how do i do system of equations when there are only 3 numbers in the problem i have to do now?

Answer 14

s + h = 1120
2.3s + 4.7h = 3128

s = 1120 - h

2.3(1120 - h) + 4.7h = 3128
distribute and solve for h
then plug back into s = 1120 - h to get s