Javed downloaded from the Internet two files that had a combined size of 696 megabytes. The size of the first file was 290 megabytes, and it took 5 minutes to download. Assuming that the files downloaded at a constant speed, how long did it take for the second file to download?
options:
2 minutes
4 minutes
12 minutes
7 minutes

Question

Mercury · Answer

old question but will respond to help out future users

the two files add up to 696 MB
the first file is 290 MB

so the second file must be 696 MB - 290 MB = 406 MB

from there, set up a proportion

first file size/first file download time = second file size/second file download time =

290MB/5 minutes = 406 MB/x minutes, solve for x