Question 1174353
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     Plan A       Plan B

    25 + 0.05x > 5 + 0.12x


Solve this inequality


    25 - 5     > 0.12x - 0.05x


       20      >      0.07x


       x       <       {{{20/0.07}}} = 285.7  minutes.


If you want to round to integer minutes,  then the ANSWER is


        Plan B is cheaper for  less than or equal to 285 minutes.


It becomes more expensive starting from 286 integer minutes.
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