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teller
 one year ago
A Web music store offers two versions of a popular song. The size of the standard version is
2.7 megabytes (MB). The size of the highquality version is 4.6 MB. Yesterday, the highquality version was downloaded twice as often as the standard version. The total size downloaded for the two versions was 2499 MB. How many downloads of the standard version were there?
@Vocaloid
teller
 one year ago
A Web music store offers two versions of a popular song. The size of the standard version is 2.7 megabytes (MB). The size of the highquality version is 4.6 MB. Yesterday, the highquality version was downloaded twice as often as the standard version. The total size downloaded for the two versions was 2499 MB. How many downloads of the standard version were there? @Vocaloid

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Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.1well, this is a very similar problem to the other one, so let's start off the same way. H = number of highquality downloads S = number of standardquality downloads H = 2*S 2.7*S + 4.6*H = 2499 do you think you can finish from here? if you get stuck, remember the other problem that we just did

teller
 one year ago
Best ResponseYou've already chosen the best response.0I don't have the other problem since it got rid of it so do I take 2.7(3S)+4.6=2499?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.1I'm not sure where you're getting 3 from

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.1remember, H = 2*S means that you can replace "H" with "2S" whenever you see it

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.1take another look if you are still confused http://openstudy.com/study#/updates/55d52a97e4b0554d6272fa4c

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.1almost, there shouldn't be a minus sign... 2.7S + 4.6(2*S) = 2499, agreed?

teller
 one year ago
Best ResponseYou've already chosen the best response.0alright so if im correct i'd take 4.6 and times it by 2?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.1right, and that gives us...?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.1don't forget the S 4.2(2*S) = 9.2S

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.1so that leaves us with 2.7*S + 9.2*S = 2499 can you try solving for S now?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.1yup, so that's our answer

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.1S = number of standard downloads = 210
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