Answer:
37,500 adults visits to break even
Explanation:
[tex]\frac{Fixed\:Cost}{Contribution \:Margin} = Break\: Even\: Point_{units}[/tex]
In this case, we don't need to cover the ntire fixed cost with adult visits, as some portion is cover with children visits:
500,000 fixed cost
40% cover by children
500,000 - 40% = 300,000
Then each adult contribution is 8 EUR so we calculate the Break-even point in adul visits:
300,000 / 8 EUR per adult = 37,500 adults visits