For the 30-day pass to be cheaper, then the average fare should be cheaper than the $2 one-way ticket.
If the 30-day pass costs $50, then I should take at least $50/$2=<<50/2=25>>25 rides to pay the same as a one-way ticket
However, given that we want the 30-day pass per ride to be strictly cheaper we should ride at least 25+1=26 times
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