If x=video game price, then 2x+(x-20)=85. Solving the equation, we find that x= 35. So the price of each video game must be $35. Now we know that the price of the music CD is $15 because 35-20=15. We can check if this is correct by adding everything together. Since 35+35+15=85, the prices are correct.
In conclusion, each video game costs $35 and the music CD costs $15.