Question

fix-it-fast plumbing charges $25 for a house call and $50 for each hour spent on the job. do it right palm and charges $35 for a house call and $45 each hour spent on the job how many hours must be spent on the job in order for the charges of two plumbing companies to be equal

Answer 1

2 hours

Explanation:

variable x = hours

fix it fast: 25 + 50x

do it right: 35 + 45x

25 + 50x = 35 + 45x

subtract 45x from both sides

subtract 25 from both sides

(this action cancels out 45x on the right side and 25 on the left side so you can combine like terms)

50x - 45x = 35 - 25

5x = 10

divide by 5 on both sides

x = 2