Given data:
The total numbers of DVDs are n= 35.
The numbers of DVDs received as gift are g=8.
The number of DVDs received in three year are
[tex]\begin{gathered} r=n-g \\ =35-8 \\ =27 \end{gathered}[/tex]The number of the movies bought every year are,
[tex]\begin{gathered} a=\frac{27}{3} \\ =9 \end{gathered}[/tex]Thus, the number of the movies bought last year are 9.
