-------------------------------------------------------- Define x : -------------------------------------------------------- Let the number of minutes of call be x.
-------------------------------------------------------- First Plan : -------------------------------------------------------- 26 + 0.08x
-------------------------------------------------------- Second Plan : -------------------------------------------------------- 8 + 0.13x
-------------------------------------------------------- Find x so that the costs are the same : -------------------------------------------------------- 26 + 0.08x = 8 + 0.13x 0.13x = 0.08x = 26 - 8 0.05x = 18 x = 360 minutes
-------------------------------------------------------- Answer: 360 minutes of call. --------------------------------------------------------
