To find the number of tickets at which both options cost the same, we can set up an equation.
Let \( x \) be the number of tickets.
The total cost for the regular ticket option (without membership) is: \[ \text{Cost}_{\text{regular}} = 11x \]
The total cost for the membership option is: \[ \text{Cost}_{\text{membership}} = 60 + 8.50x \]
To find when these two costs are equal, we set the equations equal to each other: \[ 11x = 60 + 8.50x \]
Now, we can solve for \( x \).
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Subtract \( 8.50x \) from both sides: \[ 11x - 8.50x = 60 \] \[ 2.50x = 60 \]
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Divide both sides by 2.50: \[ x = \frac{60}{2.50} = 24 \]
So, both options cost the same when you buy 24 tickets.