Question 728888
You know you're keeping the bike for three days.  So Plan A is $60 + .12x, where x is the number of miles, and Plan B is $75 + .06x.<P>
The question is when is B less than A.<P>
75+.06x < 60+.12x.  Solve it for x, the number of miles.<P>
15 < .06x<P>
250 < x<P>
Plan B costs less when you ride more than 250 miles.
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