the number of free song downloads is determined using a ratio. When you purchase 40 songs, you get 24 free downloads. How many song must you purchase in order to get 18 free downloads?
That answer will be 30 songs.
In order to get that answer you must multiply 40 by 18 which is 720 and divide it by 24 . Finally you get the answer 30 songs.
Hope it helps :]
The answer is 30 songs because you have to multiply 40 by 18 and then divide it by 24 :)