You are downloading songs to your mp3 player. the ratio of pop songs to rock songs is 5 : 4. you download 40 pop songs. how many rock songs do you download?
you download 50 rock songs since if u put it as a proportion 5popsongs over 4 rock songs equals x over 40 pop songs. 4 times 10 is 40 so 5 times 10 is 50.
