Respuesta :
Answer:
[tex]y=3x[/tex]
when Richard has 30 CDs, Benny has 10 CDs.
Step-by-step explanation:
Richard has 3 times as many music CDs as Benny does.
Let Benny has 'x' CD's.
If Richard has 'y' CDs, the number of CDs Benny has is given by the expression :
[tex]y=3x[/tex]
If Richard has 30 CDs, means y = 30
So, x will be => [tex]30=3x[/tex]
[tex]x=30/3=10[/tex]
So, when Richard has 30 CDs, Benny has 10 CDs.