A web music store offers two versions of a popular song. The size of the standard version is 2.5 meg

Mathematics
Tutor: None Selected Time limit: 1 Day

A

web

music

store

offers

two

versions

of

a

popular

song.

The

size

of

the

standard

version

is

2.5

megabytes

(MB).

The

size

of

the

high-°©‐quality

version

is

4.9

MB.

Yesterday,

there

were

710

downloads

of

the

song,

for

a

total

download

size

of

2279

MB.

How

many

downloads

of

the

high-°©‐quality

version

were

these?

Jun 19th, 2015

Thank you for the opportunity to help you with your question!

Let the standard quality be x and high quality be y

2.5x+4.9y==2279..............i

x+y=710..........................ii

x=710-y

2.5(710-y)+4.9y=2279

1775-2.5y+4.9y=2279

2.4y=2279-1775

2.4y=504

y=210

x=710-210

x=500

there are 210 downloads for  high quality and 500 of standard  quality

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 19th, 2015

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