Answer: Jenny downloaded 536 and Diamond downloaded 359 MP3 songs.
Step-by-step explanation:
Let x and y are the number of MP3 songs downloaded by Jenny and Diamond respectively.
Then from the given question ,we have the following statements :

Now to solve the system of equations, add both the equations, we get

Then , using equation (1), we get
Hence, Jenny downloaded 536 and Diamond downloaded 359 MP3 songs.