Aplumber charges $100 to come to a house and $95 dollars per hour that he is there. if the total cost of the plumber’s visit to a house was $385, how many hours was the plumber working at the house?

3 hours.

First, you have to subtract 100 from 385 to find the total cost of hours at the house. Then, since he charges $95 every hour, you have to divide 385/95 and you get 3 as your answer. Hope this helped :) .