Question

Company A charges a one-time fee of $60, and $25 per hour. Company B charges a one-time fee of $120, and $20 per hour.

a) Write an equation representing the total cost of Company A, and an equation representing the total cost of company B.
b) After how many hours is the cost to use both companies equal?
c) You want to use one of the companies for 7 hours. Which is cheaper?

Answer 1

H = hour
A = 60 + (25h) = ?
B = 120 + (20h) = ?

60 hours because 28 hours for company A x 25 dollars = 700 + starting fee is 60

28 x 25 = 700 + 60 = 760

32 hours for company B x 20 dollars = 640 + starting fee is 120

32 x 20 = 640 + 120 = 760

32 hours + 28 hours = 60 hours all together. It takes 60 hours cost the same

A= 25 x 7 + 60 = 235

25 x 7 = 175 + 60 = 235

B = 20 x 7 + 120 = 260

20 x 7 = 140 + 120 = 260

235 < 260

The cheaper one is A with 235