Answer:
See explanation below.
Step-by-step explanation:
Let's say,
x = number of tokens required to play one game of ping pong
y = number of token required play one game of pinball
Using the data given, the system of equations are:
[tex]\begin{bmatrix}9x+5y=29\\ 3x+y=7\end{bmatrix}[/tex]
Solving the system of equations using substitution method will give us:
[tex]y=4\:\:\:,\:\:\:x=1[/tex]
So, one game of ping pong required 1 token, whereas one game of pinball required 4 tokens.