Question

An electrician charges $40 to come to your house. She also charges $55 for each hour that she works. The electrician charges you a total of $190. How many hours does the electrician work at your house? Use h for the number of hours.

Answer 1

Lets say,

40 + 55h = 190

40-40 + 55hh = 190 -40

55h = 150

55/55 = 150/55

~ 3.5 hours.