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7 August, 03:34

A plumber charges $55 for a service call plus $35 per hour. if the plumber's bill was $160, how many hours was he there?

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Answers (2)
  1. 7 August, 03:50
    0
    It is three hours. If you go to a calculator, and add 55 + 35 you get $90. So, you keep adding + 35 until you get your answer, and how many times you put (+35) is how many hours.
  2. 7 August, 05:32
    0
    He was there for 3 hours cause 3 x 35 = 105 but 105 + 55 = 160
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