Since the skier has to rent skis for 30 dollars per day with both passes, we can ignore it while solving the question.
A season pass is 350, while a daily pass is 75.
[tex]\frac{350}{75} = \frac{25\times 14}{25\times 3} = \frac{14}{3} = 4 \frac{2}{3}[/tex]
So a seasonal pass is equivalent to having 4.6667 daily passes. And you can't buy 0.6667 of a pass.
So, if you went at least 5 days with a seasonal pass, then the seasonal pass would be less expensive than a daily pass.